Recent content by Mikealvarado100

Hi Have a look at attached formula. This is a part of a software. it is 'Inertia' which has 'Kg.m^2' unit. You know 'Kg.m^2' is 'Moment of Inertia' unit. What is your idea about this? Does it use 'Inertia' as 'Moment of Inertia'?

Hello What is 'Choke Station' in fluid pipelines? Is it a station in which pressure of fluid is decreasing? Is it a kind of Pressure Reduced Valve?

Hi I know what 'RPBP' valve but do not know how it works? Please explain it's function with picture, if possible. Does it work like Spring-Loaded Check Valve? it seems it is combined of two Spring-loaded Check Valve, But why two and how are assembled?

benny I've got it. This was one of best discussions I had. THANK you very much, in spite of your mis-tendency. Let's have discussion about your last point: How does 'entropy equation' can be explained for this case? Please describe a little about it.

Hi Have a look at P.4 of below video: http://www.slideshare.net/swargpatel283/draft-tube "If the pressure at the exit of the turbine is lower than the pressure of fluid in the tailrace, a back flow of liquid into the turbine can result in significant damage." How does reverse flow can occur in...

Dear benny I really really thank you for your explanation completely. By using draft tube, what happens for that kinetic energy we saved? Let me explain my interpret: Suppose a turbine which changes fluid pressure from 150 kpa to 100 kpa and atmospheric pressure is 90 kpa (such as your...

benny_91 Thank you very much. I've got it. At both situations of your example, if there is not any draft tube between turbine and tail race, then what happened? Is functionality and operation of the turbine changed (to produce zero pressure at the exit)? Or pressure at the exit of the turbine...

Regarding to previous thread: My problem is the misunderstanding of this subject CONCEPTUALLY, not mathematically and explanation of this concept is needed.

Dear Benny-91 Thank you very much for your explanation in detail. I've got it mathematically. But I am confused yet about concept of this negative pressure (At outlet of turbine). How does turbine make a negative pressure at it's outlet from a positive head at it's inlet, with regard to this...

Hi You know draft Tube after a Turbine decreases velocity and increases head of flow (it changes kinematic energy of flow to pressure energy). It is used at outlet of turbine to increase pressure head from sub-atmospheric pressure to zero. Now this is the question: Why is pressure at the outlet...

Hi The relation between torque, moment of inertia and angular acceleration is: T=Ia Have a look to it's units: (N.m)=(kg.m^2).(Rad/s^2) >>>> N=kg.m.Rad/s^2 Please explain the equation Dimensionally. How (kg.m.Rad/s^2) is equal to N? Thanks.

Nidum russ_watters believes that the pump above will has huge impact if rotates inversely. and you say that pump has four quadrants. Which one is correct? Meanwhile let me use the oppertunity to ask question about Quadrant Up/Left of the diagram: Regarding to...

Nidum I think you are explaining the quadrant 4 (right-Down). I asked about Up-Left Quadrant.

Nidum russ_watters believes that the pump above will has huge impact if rotates inversely. and you say that pump has four quadrants. Which one is correct? I exactly mean which CF pumps works in both direction without huge impacts (huge headloss or decrease in efficiency)?

Good catch. Which pumps can behave as both pump and turbine? It is my own thought that axial flow pumps with symmetric casing can operate as pump and turbine (with normal efficiency). What do you think?