Loss coefficient Definition and 11 Threads

Hi, I started to think about the drag coefficient of a sphere. At high Reynolds number Cd drops of suddenly when the boundary layer separates. If the Reynolds number is increased further, Cd increases with increasing Re. (I'm thinking about what is referred to as "post critical separated flow")...

i have a y - junction fitting (two inlets (1,2) and one outlet (3)). Two different fluids (with different densities and viscosities but same temperatures) let's say paint and other fluid comes from two inlets, mix and they will go through the outlet. and also laminar flow conditions. How to...

Hi all, Quick question: What do you guys use as your reference for minor head loss coefficients (k). I'm sure those with more experience have their own database/excels of k values found over the years. I have been personally using a combination of my Hydraulic Engineering Textbook and Google...

What is relationship between discharge coefficient and minor loss coefficient. Am I right with that equations? hl – minor head loss k – minor loss coefficient ρ – air density A – pipe cross section area Cd – discharge coefficient Δp – pressure drop u – air velocity m – mass flow here is...

Hello everyone, I am trying to design an element that its purpose is providing stiffness and damping. The material that I wish to use is rubber. My question is, how can we calculate the damping coefficient (c) for the calculation of the term c*dx/dt, when we know the loss factor of the...

Homework Statement Homework Equations N/A The Attempt at a Solution Usually we are given a table, but how do we calculate the loss coefficient between 2 different pipes with different diameters? In this case, between the 5 and the 3 cm^2 pipes?

Hi everyone; How I can define the minor loss coefficient(pressure loss) of a filter which has 60nm pore diameter?

What is the value of linear loss coefficient in Si waveguide for light of 1550 nm?

Hi, I would like to experimentally determine the flow loss coefficient (or similar performance measure if another is suggested) over the various positions of a 4 way rotary valve (for instance, fully open, 50% open etc). The final outcome would be a specification on the positional accuracy (or...

I am working on a project at my summer internship rerouting some duct work and want to do some calculations to see how much changing some of the 90 degree angles in the duct will improve flow. I don't have my Fluids text with me and was wondering if anyone knew of any good references online to...

Hi, I want to calculate the pressure loss coefficent for a diffuser but I can't find the equation. I tried with bernoulli but I don't get it. I've read that the coefficient depends on the length the scale and conical degree of the difuser? Can you help me? thank you!