CHE132B_HW4

CHE132B_HW4 - DEPARTMENT OF CHEMICAL ENGINEERING University...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
DEPARTMENT OF CHEMICAL ENGINEERING University of California, Santa Barbara Computational Methods in Chemical Engineering HOME PROBLEM ChE 132B Fall 2005 1. It is desired to determine the uncertainty in the Nusselt number for developed transport in a tube due to uncertainties in the fluid velocity, the tube diameter, and they physical properties of the fluid. Suppose that the formula for the Nusselt number is given by Nu = C Re a Pr b where C, a, and b are known constants, Re = Du r / m is the Reynolds number and Pr = m C p / m is the Prandtl number. Estimate the relative error in the Nusselt number corresponding to the following possible percentage uncertainties. u ˛ 5% m ˛ 10% k ˛ 3% , Cp r ˛˛ 1% D ˛ 0.1% 2. The following differential equation arises in the modeling of a batch reactor with a heterogeneous catalytic reaction
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/29/2011 for the course CHE 132b taught by Professor Ceweb during the Fall '09 term at UCSB.

Ask a homework question - tutors are online