The pressure drop depends on both the position of the taps and the thickness of the orifice. I know how to account for pressure tap position, such as by using charts in Perry. But all of these are for thin (sharp-edged)orifices. What is the effect of orifice thickness? Where are there charts...
I want to calculate pressure drop across a small (0.038 in), non-sharp-edged relatively thick (0.060 in) orifice. Flow is not choked, but Reynold number is high. There are big pipes on both sides.
Using Perry, discharge coefficient is 0.61. This corresponds to 2.7 velocity heads.
If...
I have a very high velocity gas stream inside a pipe. The pipe has several small holes in it, with a higher pressure gas on the outside. I need to calculate the pressure drop into the pipe. I know the equations for contaction and expansion loss, but how do I assess the loss due to direction...
The Dittus Boelter and Sieder Tate relations may be used for heat transfer coefficients. Analogous forms with Sh and Sc instead of Nu and PR may be used for mass transfer. Does the resulting expression meed to be corrected or modified if their is simultaneous heat transfer?
i.e. Is there a...
Limits of Flammability of Gases and Vapors by HF Coward and GW Jones, US Bureau of Mines bulletin 503.
And Flammabilty Characteristics of Combustible Gases and Vapors, by M Zabetics Bureau of Mines buletin 627.
They have all the gases, mixtures, etc.
