Let it be, but, in most cases especially fluid mechanics we treat water as an incompressible liquid. Anyway if there is an incompressible substance, what are the basic properties which are required to completely specify its state. Why no textbooks did mention about the state postulate of...
State postulate for a simple compressible system is completely specified by two independent intensive properties.
But what about state postulate for a incompressible system.
Why it is not so important?
But in steady flow process Mass flow rate in and out should be equal. So there won't be any mass accumulation in valve, but may be in pipeline upstream of the valve
So in a pipeline if there is a flow rate of 50 Cu.m/hr upstream of the valve and 40 Cu.m/hr flow rate downstream of the valve (incompressible fluid), then the fluid entering the valve is only 40 Cu.m/hr. Is that right?
If my pump's rated capacity is 100 Cu.m/hr and i adjusted the valve position to get only 50 Cu.m/hr. How the pump's capacity will reduce according to the valve position?
Let's take a pump which is pumping water. In the discharge side there is a flow control valve(throttling) so that it reduces the flow rate. Since water is a incompressible substance if the volume flow rate gets reduced then mass flow rate will also reduce.
But for a steady flow process, the...
Nice sir. Now I understood the concept.. It's very good in having such interactions.
Now I need to get some idea on another example.
Suppose we are having an engine whose piston and cylinder housings are made of an imaginary material whose thermal diffusivity is zero so that the heat produced...
For the initially hot slab to this process,
Initial temperature = (TH+TC)/2
Final temperature = TH
$$ΔS_H=mC\ln \left(\frac{2T_H}{T_H+T_C}\right)$$
$$\int {\frac{dq}{T_I}}=\frac{Q}{T_I}=mC\frac{T_H-T_C}{T_H+T_C}$$
For the initially cold slab
Initial temperature = (TH+TC)/2
Final temperature =...