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  1. What's new in this club
  2. In the word fluid there are two things one is liquid and second is gas. So if temperature is increase for liquid then viscosity is decreased and for gas it will be increased because fast movement of elements.
  3. viscosity decreases as temperature of a fluid increases. As temperature rises, the kinetic energy of the molecules increases. The molecules become more energetic to move freely and are loosely bonded to each other. The reverse is true for when temperature drops.
  4. Manometer used to measure the static pressure and based on the hydrostatic pressure variation equation, p=ρgh
  5. The compressibility of fluids is confined to their behavior in the mode of compression. The definition of the bulk modulus of elasticity stems from the relative change in volume and provides a measure of the compressibility of a fluid.
  6. In liquids, viscosity depends on the strength of cohesive forces between fluid molecules; hence an increase in temperature results in a decrease cohesive forces and a decrease in viscosity. For gases, viscosity depends on the momentum exchange between layers of gas moving at different velocities. An increase in temperature provides an increase in molecular activity and an increase in viscosity.
  7. Hi Everyone, Not my strongest topic but I do know the answer to this one. A Newtonian fluid's viscosity remains constant, no matter the amount of shear applied for a constant temperature. These fluids have a linear relationship between viscosity and shear stress. Non-Newtonian fluids are the opposite of Newtonian fluids. When shear is applied to non-Newtonian fluids, the viscosity of the fluid changes. This can be either Dilatant - viscosity is directly proportional, Psuedoplastic - viscosity is Inversely proportional, Rheopectic - viscosity is directly proportional over time or thixotropic - viscosity is inversely proportional over time. Why do you need to know the difference? It's important to fully understand the properties of the fluids you're transferring, mixing, or pumping, because viscosity plays a major role in sizing and selecting equipment. Understanding how it reacts to shear will help you properly size and select all the equipment it comes in contact with. I am a very busy person, so apologies in advance if it takes a few days to get back to anyone. Great topic OP. Very important knowledge to have.
  8. (a) How does viscosity of a fluid vary with temperature ? (b) Cite examples where surface tension effects play a prominent role. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  9. Why does the viscosity of a gas increases with the increase in temperature while that of a liquid decreases with increase in temperature ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  10. (a) Distinguish between ideal fluids and real fluids. Explain the importance of compressibility in fluid flow. (b) Define the terms: density, specific volume, specific gravity, vacuum pressure, compressible and incompressible fluids. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  11. Define compressibility. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  12. What do you understand by terms: (i) Isothermal process, (ii) Adiabatic process, and (ii) Universal-gas constant You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  13. Define Newtonian and Non-Newtonian fluids. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  14. Enunciate Newton's law of viscosity. Explain the importance of viscosity in fluid motion. What is the effect of temperature on viscosity of water and that of air? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  15. State the Newton's law of viscosity and give examples of its application. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  16. Explain the terms: (i) Dynamic viscosity, and (ii) Kinematic viscosity. Give their dimensions, You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  17. What is the difference between dynamic viscosity and kinematic viscosity ? State their units of measurements. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  18. Differentiate between : Liquids and gases, (i) Real fluids and ideal fluids, (ii) Specific weight and specific volume of a fluid You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  19. Define the following fluid properties: Density, weight density, specific volume and specific gravity of a fluid. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  20. Explain briefly the working principle of Bourdon Pressure Gauge with a neat sketch. You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  21. What is hydrostatic pressure distribution? Give one example where pressure distribution is non-hydrostatic You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  22. Distinguish between manometers and mechanical gauges. What are the different types of mechanical pressure gauges? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  23. What is the difference between U-tube differential manometers and inverted U-tube differential manometers? Where are they used ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  24. What do you mean by single column manometers? How are they used for the measurement of pressure ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  25. What is a manometer? How are they classified ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
  26. What do you mean by vacuum pressure ? You can write the answer and upload relevant images to justify the answer (if required) Let's together discuss and contribute in making the best answer
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