Recent content by benny_91

No I am not aware of the relationship. Please could you direct me to the proper book or online material where i can read and understand it?

So does this mean that part of the static pressure force acting on the fluid element causes it to accelerate while the other part deforms it volumetrically thereby producing normal stress in the fluid element under consideration?

So you mean to say that normal stresses in moving fluid are caused by viscocity as well as static pressure. Did I get it right?

we know that stress is a result of resistance to externally applied force. For example shear stress is a result of resistance to viscous force acting between fluid layers. On the same lines could you please tell me the cause of normal stress on fluid elements?

In the derivation of Navier Stokes equation there is a term for normal stress acting on the fluid element. While the cause of normal stress is the static pressure which is already present in the equation doesn't this mean that the same force on the fluid element is repeated twice with different...

I shall try to explain where I find the equation difficult to understand. In the 2nd step of the derivation you have stated this equation: I shall try to explain where I find the equation difficult to understand. In the 2nd step of the derivation you have stated this equation: $$dh=Tds+vdP$$...

Thanks Chet for replying. If you have a look at the derivation I have posted, you will see that I have done it using the steady state energy equation neglecting changes in kinetic and potential energy. If you can explain to me the proof of this relation or provide any link which shows its...

I believe this equation is true not just for isothermal processes but other open system processes as well.

Homework Statement I came across this equation denoting the work done by an open system (e.g. turbine or compressor). I wonder how they arrived at such an equation. Homework Equations Differential form of the steady flow energy equation for an infinitesimally small control volume neglecting...

Yes I agree. For instance you have an entire theory on 4 dimensional geometry (I found it once in wikipedia) but such a geometry is difficult to even imagine. May be it shows something in the physical world which we are still unfamiliar with. But I would love to meet that guy who can...

There is no such point where gravitational field of a body becomes completely 0. We can only say that the distance of that point from the center of the body under consideration tends to infinity. However far we go from that point we will always experience a force that gets smaller and smaller in...

It would be much easier to help you if you can post a picture or diagram of your setup with necessary dimensions like the diameter of the pulleys etc.

I like the concept. Is this system already in use or is it your own unique idea?

Someone mentioned a formula for impact velocity which is same as escape velocity. So can't we adjust the values of the terms in the formula (such as mass of the pulling body and its radius) to get the impact velocity equal to the speed of light? I have heard that mass increases with speed but...

The force required by the car to travel at a constant velocity minus the force required to overcome rolling friction at the wheels will give the resistance force offered by the wind. This force multiplied by the constant velocity of the car will give the energy generated or energy transferred to...