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Challenge 10 – Simulating the combustion of NATURAL GAS (methane) Aim – To analyse the emissions and calculate the mass fraction of species resulting from the combustion of natural gas Introduction to Combustion of natural gas – Natural Gas is a naturally-occurring mixture of hydrocarbon and…
Vedant Joshi
updated on 13 May 2021
Challenge 10 – Simulating the combustion of NATURAL GAS (methane)
Aim – To analyse the emissions and calculate the mass fraction of species resulting from the combustion of natural gas
Introduction to Combustion of natural gas –
Natural Gas is a naturally-occurring mixture of hydrocarbon and non-hydrocarbon gases found in porous formations beneath the earth's surface. It is not a pure element like oxygen, but a mixture of gases of which hydrocarbon gases are the components that are combustible and produce heat.
Natural gas distributed by utilities varies in composition. The heat-producing hydrocarbons are composed of the elements Carbon and Hydrogen. Methane (CH4) is always the largest component. Ethane, propane (C3H8) and butane are heavier, "hotter" hydrocarbons produced from natural gas wells, and are present in low concentration. Nitrogen, Oxygen, and Carbon Dioxide are the major components (99.9%) of air, but are considered contaminants of natural gas.
Combustion of natural gas is the chemical reaction of oxygen with a combustible material which produces heat.
There are three requirements for combustion. If one of these three components is missing, combustion cannot occur.
Natural gas will not burn unless the mixture is within a flammable range of roughly 4 to 15% gas per volume of air. Above and below, these amounts it will not burn. The most efficient or ideal mixture is about 10% gas.
Solving and Modelling Approach –
Meshing –
INLET AIR
INLET FUEL
AXIS
WALL SIDE
OUTLET
Setting up the case in Ansys Setup –
Results and Findings –
Tables and charts –
TABLES AND GRAPHS -
Conclusions and inferences –
Reference Research Papers –
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Week 10 - Simulating Combustion of Natural Gas.
Challenge 10 – Simulating the combustion of NATURAL GAS (methane) Aim – To analyse the emissions and calculate the mass fraction of species resulting from the combustion of natural gas Introduction to Combustion of natural gas – Natural Gas is a naturally-occurring mixture of hydrocarbon and…
13 May 2021 12:03 PM IST
Week 9 - Parametric study on Gate valve.
Challenge 9 – Parametric Study on Gate Valve Aim – To perform a parametric study on water passing through a gate valve by changing the valve opening from 10mm to 80mm and analysing the mass flow rate at the outlet in each case. Introduction to Gate Valve and its working principle – A gate valve's main…
06 May 2021 06:50 AM IST
Week 8 - Simulating Cyclone separator with Discrete Phase Modelling
Challenge 8 – Simulating Cyclone Separator using Discrete Phase Modelling Aim – To simulate the CFD of a cyclone separator and calculate the separation efficiency by varying the fluid inlet velocity, particle inlet velocity and diameter of particles Introduction to the Cyclone Separator and several empirical…
02 May 2021 06:22 AM IST
Week 7 - Simulating Fluid Sloshing effect inside a Gear-box
Challenge 7 – Simulating Fluid Sloshing effect inside a Gear-box Aim – To observe the fluid sloshing effect inside a Gearbox by iterating with 2 fluids mainly engine oil and n heptane, and thereby analyse the lubricating efficiency (by varying immersion percentage) Introduction to Gearbox and fluid sloshing…
19 Apr 2021 12:06 PM IST
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