Is the velocity of the fluid is controlled by valve?

Pump will create differential pressure when it starts to operate and drive the fluid to the discharge, but the velocity of the fluid is still controlled by valve. Is this correct?

08 September 2017 9,225 10 View

What is the percentage range of the capacity that can be spilled back?

Kindly refer to the image uploaded. May I know, what is the percentage range of the capacity that can be spilled back to the suction of the pump through the recirculate line (restrict orifice...

06 July 2017 2,735 2 View

Can a capacitance type transmitter to be intrinsically safe type also?

If no, what is the difference between capacitance type transmitter and intrinsically safety type transmitter?

04 May 2017 7,115 2 View

Is there any difference between pressure gauge and total fluid pressure at a particular pipeline location?

If yes, is the pressure used in the calculation of the pressure drop of suction pressure of a pump, the gauge pressure at that location or the total pressure of the fluid? Beside, if the pipeline...

04 May 2017 1,690 6 View

Is there any pressure drop across an expander for any fluid?

By referring to the "Fluid Mechanics Fundamentals and Applications" by Yunus A. Cengel and John M. Cimbala around page 353, I notice the pressure will increase after expander.Or can I use the...

04 May 2017 7,754 4 View

Is the suction pressure of a pump, the static pressure, dynamic pressure , hydrostatic pressure or total pressure at the inlet of pump?

Suction pressure = suction surface pressure + static suction pressure - suction friction pressure

04 May 2017 2,343 0 View

Is there any water formed in a closed loop system (closed loop tube) with fluid, refrigerant?

I have seen the filter dryer is used in the cooling system for refrigerant part in between the condenser and expansion valve. Is there any water formed inside the tube when there is cooling process?

03 April 2017 1,200 5 View

How to make corrosion inhibitor from raw materials with known concentration?

The corrosion inhibitor is used to reduce the corrosion rate of a material.

31 December 2015 2,846 7 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View