Register to reply

Flux and Flow rate conversion

by AlexN07
Tags: conversion, flow, flux, rate
Share this thread:
Jul28-10, 07:47 AM
P: 1

I am performing a helium leak experiment in which the detector outputs a number in mbar.L/s which is the amount of helium permeating through a specimen at a given pressure per unit of time.

I am interested in obtaining a permeability coefficient (K) for this specimen for the given pressure with helium as the working fluid.

My equation is: -K = J . delta x / delta P (rearrange Fick's 1st Law)

I know delta x (thickness) and delta P (pressure), however I am having trouble converting the mbar.L/s (leak rate) to a flux J (which I believe is in (mol /m^2 . s) for the equation.

Can somebody please help.

Phys.Org News Partner Chemistry news on
Synthesis produces new antibiotic: Scientists confirm potent synthesis of natural tetracycline
Scientists learn to control reactions with the shape of a rare-earth catalyst
Protein glue shows potential for use with biomaterials

Register to reply

Related Discussions
Why does flux flow through ferromagnetic materials? General Physics 1
Conversion of Photon flux to Counts Advanced Physics Homework 2
Flow and flow rate please help Introductory Physics Homework 6
Flow Rate Mechanical Engineering 6
Flow rate Introductory Physics Homework 2