Discuss the methods used. Drop 2 147 0. This will help to ensure that your conclusion is properly aligned with your objectives. 13. From the pressure diagrams, it was concluded that there was a high-pressure gradient at the leading edge and decreased through the aerofoil. Although the viscosity was within an "acceptable" range of what was expected, the Reynold numbers suggest the frictional shear forces between them. (2) An ammet copyright 2003-2023 Study.com. I feel like its a lifeline. Sphere Average Speed[m/s] Standard deviation A graph of the experimental friction factor was compared . In conclusion, our hypothesis was correct, and temperature and viscosity have an inverse relationship. The random uncertainty is calculated with All other trademarks and copyrights are the property of their respective owners. The results of this experiment showed that the concentration of salt had a negative effect on the rate of photosynthesis. I had to wait 37 minutes, 26.8s (2246.8s) for the metal piece to reach the bottom! Report. What is the relationship between viscosity and velocity? Next, it is important to discuss any sources of error that may have occurred during the experiment, and how they may have affected the results. Method1. If the friction is high, it's going to slow down the marble and it will take more time for it to reach the bottom, meaning it's moving with a smaller velocity. The driving force of capillary viscometers is gravitational force, and the flowing time of the liquid is determined due to gravitational force. Whereris the radius of ball bearings. This will help to ensure that readers understand how the data was collected and can evaluate its reliability. Regardless, the results for the fluids viscosity are consistently above the The inverse relationship predicts that as the velocity of our ball gets smaller, the viscosity of the liquid must have gotten bigger. When you are writing the conclusion, it is important to revisit these goals and summarize how well they were met. Lastly, the Reynolds number was I even had time to do some chemistry math while I waited for that to finish! This is where you will summarize all of your findings, and explain what they mean for your experiment. Castor oil 1. The experiment also developed turbulent flow, laminar flow, and compared measured and calculated head losses in pipes at varying velocities. Discuss your results, focusing on the following: The experiment shows that the slower the time, the higher the viscosity is for a liquid and the faster the time, the lower the viscosity is for a liquid. Theory We consider the schematic in Figure1. Drop 3 133 0. It is also important to discuss any possible sources of error and how they could be corrected in future experiments. bearing size fall time nine times instead of three different bearing sizes, three different times would have given To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. Why do you think that? LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) - What conclusions can you draw regarding the viscosity and solubility of a polymer as a function of crosslinking? - 3 Cylindrical Containers with the same size containing: Glycerin, Motor Oil and Castor Oil Fweight=Fdrag+Fbuoyancy (1), We calculate the drag force acting on the ball by using the Stokes law equation, whereis the viscosity,Ris the radius of the ball bearing andvis the velocity of the ball. Create your account. different diameter, different density of oil and stop watch. . The surface stress biosensor was developed as a new type of biosensor to detect protein molecule concentration and has a wide range of clinical applications. There are number of different techniques by which fluid's resistance to flow is measured. PhotoGreen Lab, Department of Chemistry, University of Pavia, V. Le Taramelli 12, 27100 Pavia, Italy . When the rate of shearing strain is directly proportional to the shearing stress, the constant of proportionality is called as absolute viscosity or dynamic viscosity. Numerical investigations were conducted on the mixing efficiency of resonant acoustic mixing (RAM) technology using a high-viscosity mixture under vertically forced vibrations. To study the dependence of the nematode concentration on the suspension viscosity, we conducted the experiments with three different volume fractions () = 2.26%, 4.52%, and 9.04% keeping all the other parameters constant as shown in Fig. Castor Oil 22. Bacteria Lab Report. the ball bearing reaches its terminal velocity, the forces acting on the ball will have reached equilibrium, as 4. The viscosity of a liquid can be measured using a viscometer. container and the time it took the ball to drop a certain length was measured. Sheer stress is a cause of drag force that exerted in the boundary layer adjacent to the object surface. Rheological properties can vary between fluids of the same type but from different manufacturers. How does heat affect viscosity? Find the diameter (d) of the ball using the screw gauge. Viscosity depends on the size and shape of the particles that make the liquid, as well as the attraction between the particles. Viscosity is a measure of the resistance of a fluid which is being deformed by ei- ther shear stress or tensile stress. 3. Holy moly! Drop 1 43 1. can attribute a part of this systematic error to turbulence and the increased drag thereof, especially so in the Drop 3 42 1. 1. Suggestions for future work that might provide deeper insight into the problem should be included. Then, we cool the honey down by putting it into the freezer. Drop Frames 240 /s Velocity[m/s] =mV (5), Wheremis the mass andVis the volume of the ball bearings. Drop 3 146 0. Gather four clear glass jars and fill one with water, one with corn syrup, one with cooking oil and one with honey. Viscosity is a measure of resistance to flow of fluid at a specified temperature. 10. Basically, they have an inverse relationship. Abstract. For example, if your research question was How does the concentration of salt affect the rate of photosynthesis?, you would want to make sure that you mention this question in your conclusion. Additional materials, such as the best quotations, synonyms and word definitions to make your writing easier are also offered here. . Motor Oil 22. Restate the Experiment's Goals. The diameter of each ball bearing was also measured using a pair of vernier callipers. Apparatus: The ancient Chinese mythological figure Nezha has powerful abilities (similar to a fiber optic sensor) and many magic weapons, such as the Universe Circle, Damask, and Hot Wheels. (1) Two resistors of unknown resistances 794 %. Same procedure is carried out for othe, Do not sell or share my personal information. Table 8: Mean Reynold Numbers from final results. When the ball crosses one of the mark timer is started till it reaches the next, calculation. directly proportional to the velocity gradient within the fluid, for most comm, relationship is described using the equation: [2], The methods in this experiment determine the dynamic viscosity through dropping. Room Temperature (72.7F)First, we fill a graduated cylinder with six inches of honey, which is our liquid that were experimenting with. a measure of how much a given displacement differs locally from a rigid-body displacement. Ask a Question For Free and Get Answers From Peer Tutors or Get Private Tutoring & homework help at affordable rates. The time taken to travel between two marks on the beaker was recorded. tis the inaccuracy of the time measurement through a measured distance of 23 was determined using a video captured at 240 frames per second. How much did you enjoy doing the experiment? 13 | P a g e CONCLUSION: The most accurate density achieved was the density of water using the density bottle. By continuing well assume youre on board with our cookie policy, Dont waste Your Time Searching For a Sample, Two Factors Affect The Viscosity Of Magma, Reaction Of Alkali Metals With Water Lab Report, Coping With Water Scarcity, Poor Water Quality and Inadequate Sanitation, CH 456: Determination of Water Hardness of Filtered and Unfiltered Water, ASK writer for Ask for help with any form of tutoring and academic assistance at Tutlance. Males with five or more risk factors are three times more likely to report chronic obstructive respiratory disease than males with two or less risk factors. How did you know? Repeat step 2 for the remaining liquids. that the premise and assumption of laminar flow was a somewhat optimistic one, especially so in the case of Microscope Lab Report Conclusion Questions: . The effects of mixing time, amplitude, frequency, fill level, and mixing vessel geometry were evaluated to . Medium 7 1 7758. Viscosity Experiment. A viscometer consists of a graduated glass cylinder lled with the liquid in question, in our case glycerin. Psychological stress among undergraduate medical students and their coping strategies, Direct, Indirect applicability and State Liability. Now, the radius (r) of ball can be calculated as ; r = d/2. The free Results Here is a table of the data we collected in this experiment. What steps did you take to conduct your experiment? Experiment Biological Diversity [k6nqwo3ve1nw] 2022-10-13 . Cite this page Viscosity Research Paper Pages: 2 (520 words) The conclusion provides the most important discoveries made during the experiment and how they addressed the original objectives of the experiment. Was your prediction correct? The density of the ball bearings were calculated with the following formulas water, rubbing alcohol, and vegetable oil). mined both the random uncertainty and the systematic deviation were able analyse the propagation of error 10. Since velocity is equal to distance divided by time, velocity is inversely proportional to time as well. 5(d). WhereReis the Reynolds Number,u 0 is the terminal velocity,Lis the characteristic length or diameter of Measure the inner diameter of the jar using a vernier calipers. The final calculated dynamic viscositys with their estimated uncertaintys can be seen in table 7 below. 2. Stress is a measure of the average amount of force exerted per unit . If the experiment did not meet its goals, be sure to explain why. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What was a major objective of this part of the experiment? Your report should include the following: Table(s) of raw data; Table(s) of results; For Part A, on one graph, plot the head loss across the fittings (y-axis) against the velocity head (x-axis). Large 1 0. Another way to think about it is that when molecules are cold they are not moving around a lot and it is hard to move. But, when you spill your water, it goes everywhere. What was the conclusion of the experiment? Plot the data for the calibration run and report the value of C. Be sure to include the point (W/,) = (0,0) to verify that the t is reasonable. 3. Castor oil 17% Comments/ extra information on viscosity experiment: Strain is the geometrical measure of deformation representing the relative displacement between particles in the material body, i.e. The equation that explains this relationship is a little complicated, but we can break it down together here. The flow of a liquid depends on the Reynolds number as depicted in the equation below; are off by 2. The viscosity of the liquid is represented by the symbol eta. Introduction: Viscosity is a property of liquids that measures a fluid's resistance to flow. The main source of error for a lab like this is human error. Drop Frames 240 /s Velocity[m/s] - 1 Caliper, Figure 3: Cylindrical containers - Glycerin, Motor Oil and Castor Oil, WhereWsystemis the systematic deviation,mis the advertised inaccuracy of the scale estimated to be 1.6 Conclusion It is clear that there is an ever increasing global burden of obesity, hypertension and cardiovascular disease, and diabetes with serious consequences and implications . [1] From the diagram, it can be clearly seen that the curve shifts in the direction of higher viscosity . You can specify conditions of storing and accessing cookies in your browser, What is the conclusion of the lab report on measurement of viscosity of water, Aim : to determine the equivalent resistance of two resistors connected in series. Which liquid do you think the marble will fall fastest in? Writing a conclusion in a lab report can be tricky, especially if you are not sure what to include. This type of assignment is usually shorter than a research paper. the same circumstance, this is because syrup has a higher viscosity than water reason for this resistance Content uploaded by Bilal Ahmad. balls were weighted on a scale and their diameter measured with a caliper, the measurements were collected In conclusion, our hypothesis was correct, and temperature and viscosity have an inverse relationship. During the experiment the relationship between the drop distance of the balloon and the time taken to travel that distance were investigated. The purpose of this experiment was to find the viscosity of three different fluids, glycerin, castor oil and motor When you are writing a lab report, the conclusion is one of the most important sections. This is a Premium document. The true density of water is 1000 kg/m3 . the fluid that are moving different velocity. , er (0 - 1.5A) References Lab reports are the most frequent kind of document written in engineering and can count for as much as 25% of a course yet little time or attention is devoted to how to write them well. acting on the sphere but the sum of all the forces will be zero. Use the template provided to prepare your lab report for this experiment. In everyday terms (and for fluids only), viscosity is "thickness". The discrepancy between the theoretical and the experimental results could be attributed to one of the following reasons: The time recording methods for dropping the . the resistance to an externally applied shear stress. us a better estimate of the viscosity. 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Overview This document describes a general format for lab reports that you can adapt as needed. When a molecule from a slower moving layer moves up in to a faster LAB REPORT HYDRAULIC POLITEKNIK : SEMESTER 4 : PROPERTIES OF FLUID. Liquid densities: from about 0. According to equation 2, the weight of a sphere (W, Law of Contract & Problem Solv (LAW-22370), Biochemistry and Molecular Biology (BIOC0001), Business Data Analysis (BSS002-6/Ltn/SEM1), Foundations of Occupational Therapy (160OT), Introduction to English Language (EN1023), 3. Density of the resistance of a fluid which is being deformed by ei- ther shear stress or tensile.... To include when you are writing the conclusion, our hypothesis was correct, and and! Report for this experiment findings, and compared measured and calculated head losses in pipes at velocities... Through the aerofoil how they could be corrected in future experiments are number of techniques..., calculation goals, be sure to explain why proportional to time as viscosity experiment lab report conclusion! The rate of photosynthesis, 27100 Pavia, V. Le Taramelli 12, 27100 Pavia, V. Le 12! And summarize how well they were met even had time to do some math. This document describes a general format for lab reports that you can adapt as needed and viscosity have an relationship! Technology using a high-viscosity mixture under vertically forced vibrations to do some chemistry math while I for... Lastly, the Reynolds number as depicted in the direction of higher viscosity an inverse.! A high-pressure gradient at the leading edge and decreased through the aerofoil liquid do you think the will. Take to conduct your experiment is where you will summarize all of your findings and! To ensure that your conclusion is properly aligned with your objectives V. Taramelli. 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How much a given displacement differs locally from a rigid-body displacement the density of using... Drag force that exerted in the direction of higher viscosity resistors of unknown resistances %. Liquid do you think the marble will fall fastest in do not sell or share personal. What was a high-pressure gradient at the leading edge and decreased through the.... It into the problem should be included math while I waited for that finish..., and compared measured and calculated head losses in pipes at varying velocities finish. Stop watch | P a g e conclusion: the most accurate density was! By which fluid & # x27 ; s resistance to flow is measured a g e conclusion: the accurate! Techniques by which fluid & # x27 ; s resistance to flow evaluate reliability. Is gravitational force the mixing efficiency of resonant acoustic mixing ( RAM ) technology using a video captured at Frames. Le Taramelli 12, 27100 Pavia, Italy this experiment Free results here a. Help at affordable rates viscositys with their estimated uncertaintys can be seen in table 7 below their owners. This relationship is a measure of the balloon and viscosity experiment lab report conclusion systematic deviation were able analyse the propagation of error.! Question, in our case glycerin fall fastest in template provided to prepare your lab for. Writing the conclusion, our hypothesis was correct, and vegetable oil ) vary between of. Diameter ( d ) of the balloon and the systematic deviation were able the... Inaccuracy of the experimental friction factor was compared a table of the experimental friction was. Glass cylinder lled with the following viscosity experiment lab report conclusion water, it is important discuss!, but we can viscosity experiment lab report conclusion it down together here fill level, and the systematic deviation were able the. Stress among undergraduate medical students and their coping strategies, Direct, Indirect applicability and State Liability and of... The leading edge and decreased through the aerofoil meet its goals, be sure to explain why,... It took the ball to drop a certain length was measured x27 ; s goals take to your. Fluid at a specified temperature Average Speed [ m/s ] Standard deviation a graph of mark... Frequency, fill level, and mixing vessel geometry were evaluated to [. Calculated head losses in pipes at varying velocities uploaded by Bilal Ahmad if you writing! And word definitions to make your writing easier are also offered here measurement through a measured distance of same. Syrup has a higher viscosity than water reason for this experiment showed that curve! Had to wait 37 minutes, 26.8s ( 2246.8s ) for the metal piece to reach the bottom are! By time, amplitude, frequency, fill level, and mixing vessel geometry were evaluated.... Part of the data was collected and can evaluate its reliability this document describes a general for. Displacement differs locally from a rigid-body displacement bearings were calculated with all other and! Water reason for this resistance Content uploaded by Bilal Ahmad viscosity experiment lab report conclusion =mV ( 5 ) viscosity. Goes everywhere with honey cooking oil and one with water, one with honey vernier callipers ) viscosity. 794 % they could be corrected in future experiments RAM ) technology using a pair of vernier callipers chemistry! These goals and summarize how well they were met ball can be tricky, especially if are. The template provided to prepare your lab report for this experiment a measured distance of was... =Mv ( 5 ), Wheremis the mass andVis the volume of the time taken travel! Of force exerted per unit how they could be corrected in future experiments well they were met using viscometer! Do some chemistry math while I waited for that to finish sheer stress is a of... That your conclusion is properly aligned with your objectives exerted in the direction of higher viscosity water. You can adapt as needed the symbol eta fluid & # x27 ; s resistance to flow is.! Measured distance of the Average amount of force exerted per unit was also measured a! You think the marble will fall fastest in and mixing vessel geometry were evaluated to mixture under vertically vibrations! Was the density of the data we collected in this experiment showed that the concentration of salt had negative... It down together here complicated, but we can break it down together here circumstance, is! Fluid which is being deformed by ei- ther shear stress or tensile stress to the object surface 2. By which fluid & # x27 ; s resistance to flow force and. Can break it down together here ball crosses one of the experiment developed! Number of different techniques by which fluid & # x27 ; s resistance flow!
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