Hello.
There is a file that is attached here.
I want to calculate pressure (P) and gas velocity (ug).
The data are:
The system is an ideal gas mixture in a fixed bed reactor, the gas goes up through the reactor and I am using numerical methods to calculate my parameters from mass and energy balance. But inside the problem, I am facing the following problem :
temperature (T) a function of z and is know for z1
P is a function of z not r.
ug is not a function of r.
r7=r9=r10=0
𝑐𝑡 is molar concentration of gas mixture.
if 𝑐𝑡 is known, I can calculate the mole fractions (yi) from an equation that is not attached here.
𝜌𝑔 is mass density of gas mixture and I think, calculates from( 𝜌𝑔=Mwg*𝑐𝑡 and Mwg =Mw1*y1 + Mw2*y2 +Mw3*y3+..., Mwi is molecular weight of component i) is a function of mole fraction and 𝑐𝑡 (𝑐𝑡 =P/RT ).
μ𝑔 is dynamic viscosity of gas mixture and is a function of mole fraction and temperature (T).
dp,epsilonb are known and are constant.
How can I calculate P pressure and ug from these equations for z1?
Hi:
The section 5.5.2 "Flow through a packed bed" of Elements of Chemical Reaction Engineering, 5 edition by H. S. Fogler could be of help.
Greetings.