International Journal For Multidisciplinary Research

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Numerical Predictions on the Intermittent Combustion Instability: Implications and Applications

Author(s) Vinayak Malhotra, Shivangi Dhawan, Eshaan Raj
Country India
Abstract Any application employing combustion places a huge emphasis on safe and effective operations. Several industries make use of relatively small amounts of propellant volumes to generate enormous amounts of energy. For instance, the Aerospace industry requires fuel injection in liquid rocket engines and gas turbine engines for producing thrust. For such cases, combustion comes with its own set of challenges. The predominant challenge among them all is that of combustion instability. Instabilities are physical phenomena occurring in both reacting and non-reacting flows. In the context of engine combustion, they tend to emanate from very small perturbations in the flow field and amplify in magnitude to alter the macroscopic properties of the flow causing problems for the smooth functioning of engines. Since the problem of combustion instability arises from the point of fuel injection itself, this project aimed to look at instability from the viewpoint of intermittent instability in the temporal domain and has redefined it from the perspective of energy loss. For understanding the results in a simplified form, a new zonal system ‘i-SEV’ was established. Owing to the heterogeneous heat and mass transfer, optimization and characterization of combustion performance were carried out parametrically to arrive at a conclusive decision of the key parameters in combustion instability and the governing physics behind it.
Keywords Combustion instability, Propulsion, Fire safety, Numerical simulations, Heat transfer
Field Physics > Mechanical Engineering
Published In Volume 5, Issue 1, January-February 2023
Published On 2023-01-10
Cite This Numerical Predictions on the Intermittent Combustion Instability: Implications and Applications - Vinayak Malhotra, Shivangi Dhawan, Eshaan Raj - IJFMR Volume 5, Issue 1, January-February 2023. DOI 10.36948/ijfmr.2023.v05i01.1349
DOI https://doi.org/10.36948/ijfmr.2023.v05i01.1349
Short DOI https://doi.org/grpdrf

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