Recent content by Talal

Hello, Apologies for the late reply. It is Fluid mechanics. I am working on microchannels, and I am a University Researcher.

Is there a way to measure the critical capillary number? I am running water flooding tests in micro single capillary ducts. I am displacing oil in my experiment, and my channel should be oil wet. I was able to measure the properties of both fluids, this includes; Kin and Dyn Viscosities...

Hello, I don't now who replied after Mike. Yes, this is exactly what is going on. The experiment I am conducting, I have different shapes including a smooth channel as you suggested. I was using Satish Khandlikar's method which is a confined hydraulic diameter. Wcf = W - 2K where W is the...

For an experiment I am running, I am trying to generate 80% foam quality in a 100 x 50 micron^2 channel. My question is, how can I achieve 80% quality dynamic foam ? I came across many papers that use Injection pressure ratio between gas and water. Other papers use flow rate ratios. I am a bit...

Thank you very much for your answer.

According to the attached article, Foam is a Bingham plastic. Darcy's equation with Bingham's extension can be used to describe the flow. My question is, for foam flow, does utilising Darcy's equation a reasonable approach ? What benefits does it have, or better yet, why not use Navier stockes...

Hello, For a project I am working on, I am trying to design a 2D with parallel sinusoidal patterns. Imagine a 2D section of a pipe (two parallel surfaces with distance in between). Each surface is basically a sine function. Peak points meet with each other, as well as troughs. Liquid is...

Greetings, I am currently a student in the UK. I found this website in hopes to get help with certain questions I have regarding surface roughness. I don't wish to give much details about my self. I hope I don't come across as offensive. Best Regards, Talal