Jeeva Balu

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Questions related from Jeeva Balu

Whether to use REFPROP or to use polynomial function for properties variation during heat exchange w.r.t temperature and pressure?

we are working on the simulation of Supercritical CO2 fluid in a heat exchanger application. Whether the user-defined function to be used or REFPROP call function in Fluent is sufficient. The...

25 December 2019 4,600 1 View

How do I specify internal interface boundary conditions in Ansys Fluent, to specify back pressure in a pipe flow problem?

The problem is defined as attachment. How to specify internal interface boundary condition in Ansys fluent. Kindly suggest.

31 July 2015 9,728 3 View

Why do higher heating values or high calorific values of bio-diesel decrease during accelerated bio-diesel oxidation conditions?

The test was carried for bio-diesel by accelerated oxidation conditions with oxygen and heat at 40°C. We observed an increase in unsaturation in the FAME composition, increase in peroxide value...

21 October 2014 1,585 11 View

Why do cartridge heaters trip due to a short at higher temperatures?

Before switching the heaters no continuity was found between heater and heater casing (Mild steel casing). But after few minutes of heater operation ELCB/MCB tripped, continuity between heater...

04 August 2014 7,490 2 View

What will be the effect of fuel injection timing from suction TDC to compression or firing TDC in a port injected gasoline engine?

I would like to know how the pressure curves and emissions behave when fuel injection timing in a port injected gasoline engine is varied from suction TDC to compression TDC. Coefficient of...

08 June 2014 5,842 1 View

How can I measure the higher lambda value above 1.8 from a lambda sensor?

1.Typical Lambda sensor range is between 0.2 to 1.8. How to measure higher lambda value more than 1.8 in experiments. i.e to measure very lean equivalence ratio? Can Brett schneider equation be...

13 May 2014 1,283 4 View

How can I define homogeneous/ homogeneity of charge air in a petrol engine mathematically?

Petrol engine has homogeneous (Air & fuel) mixture. How can I define the flow as homogeneous mathematically?

26 April 2014 2,361 2 View

How can I automatically control A/F (air/fuel) ratio for an HCCI engine?

What should the control system design be? Whether controlling air and fuel mass flow rate separately or signal should come from lambda sensor to the ECU (Engine control unit) for control . Please...

26 April 2014 7,302 2 View

In a diesel engine when the load is increased what happens to CO & HC emissions?

If load is increased in a diesel engine running with diesel do HC & CO emissions increase or decrease? Points: 1. If load is increased more fuel is supplied which increases HC & CO. On the...

26 April 2014 7,750 5 View

Why is cycle to cycle fluctuation in HCCI /PCCI engine very high, how can it be controlled?

This is for gasoline PCCi engine running with gasoline alone without diesel injection at TDC.

26 April 2014 7,719 2 View

What are the properties of glass used for combustion diagnostics application and how to measure the properties of the glass?

Glass used for optical engines

26 April 2014 1,777 3 View

How to calculate torque of the shaft for turbines in CFD fluent simulation ?

We are working on CFD simulation of hydrokinetic turbine. we are using MRF (multiple frame reference) modeling and calculate torque in CFD fluent software with z- direction has the axis of...

01 January 1970 1,497 6 View

How to identify the speed of the hydrokinetic turbine for different flow velocities in CFD fluent ?

For CFD analysis of turbines, speed will be the input parameter for simulation for a given fluid velocity. we would like to estimate the speed of the turbine in Ansys Fluent for different flow...

01 January 1970 3,658 3 View