What is the difference between wake and recirculation region?
2016年2月13日 · Recirculation is a specific condition where the flow separates from the body of the obstacle. This creates a low pressure area immediately downstream which sucks fluid back into this region from the main flow with the net result …
How to calculate a circulation pump size? - Engineering Stack …
2021年9月15日 · There will not be any extra volume added or removed, just the set volume of water requires to be circulated. The inlet and outlet ports and the pipe connecting them are at the same elevation (they are all in a horizonal plane/imagine them to be placed on a bench top). The pipe diameter would be around 3/8", the pipe length is lets assume 14 feet.
What is the meaning of vorticity and circulation?
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How to calculate the time to heat up a tank using recirculating liquid
2019年1月17日 · Viewed 2k times. 1. My question is about a tank filled with some liquid (properties of the liquid are known and can be considered constant. Specific heat equals 1.5 kJ/ (kg.K)). The initial temperature of the liquid in the tank is 90 ºC. Now imagine that 2000 L/h of this liquid are recirculating, but before returning to the tank they are ...
chemical engineering - What is the retention time distribution in …
2015年9月24日 · I think this is a solved problem, but for some reason the solution is not in any textbook I've consulted so far. Only the classical case of stirred tank reactor (STR) (all same size, no recirculation). What is the effect of recirculation on the RT distribution? Logic says the distribution will be closer to a single vessel, but how to quantify?
How to calculate thermal load? - Engineering Stack Exchange
2018年1月24日 · This is the information I already have: Dimensions of the oven: 23.7in x 59in x 59in (height, width, depth) Desired temperatures: max 284F, min 158F. I have found the formula to calculate this, but honestly, I don't know how to begin: q = -k A dt/dx. q = heat transfer rate, Btu/hr. k = thermal conductivity, Btu/(hr-ft-F)
Why does flow seperation cause low pressure zone?
2017年3月26日 · I know that flow seperation occurs when the fluid adjacent to a body deviates from the contours of the body . This occurs because the pressure increases in the direction of flow and velocity decrea
Pressure recovery in turbomachinery - Engineering Stack Exchange
2019年10月8日 · Without a suction diffuser, the pump inlet flow is subject to recirculation zones that produce pressure losses and a non-uniform velocity inlet. These recirculation zones can be the result of pipe bends and fittings. A suction diffuser "straightens" the flow and removes these flow structures. An uneven inlet pressure distribution and velocity ...
Question About Pumps in Series - Engineering Stack Exchange
2019年10月21日 · Pump1 turns on, and both for recirculation and taking some load off Pump2. Probably OK thanks to recirculation making up flow difference. Pump2 turns off. This is where things get a little hairy since Pump1 might actually end up driving Pump2 and Pump2 may not handle that. solution is a bypass of pump2 with a check valve.
What's the difference between linear and nonlinear continuum …
2021年3月29日 · To my experience, the basic difference is in the form of constitutive equations. I.e in the case of linear continuum mechanics you have the stress strain relationship. where E is a constant and therefore proportional. In the case of nonlinear mechanics, the stress strain constitutive equation is not limited to the proportional relationship above.