Development of Analytical Method for Mass Flow Measurement in a Porous Channel

Porous channels are used in scramjet to perform transpiration cooling in order to reduce thermal load in the combustion chamber. Therefore, it is important to analyze fluid flow in the porous channel. Prior to this, it is important to estimate the mass flowrate, pressure, and temperature precisely inside as well as outside the porous channel. In the present work, permeation cells are specifically designed and fabricated for the permselectivity test bench. This allows the user to measure the mass flowrate, temperature, pressure, and composition of outlet flow along the length of the porous tube. In order to measure the mass flowrate correctly, an analytical method is developed. To validate the method, Nitrogen is used as a fluid.