NUMERICAL ANALYSIS OF THE EFFECTS OF NEEDLE LIFT AND SEAT ON THE CAVITATION FLOW IN THE DIESEL INJECTOR NOZZLE

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MAHDI MIRALAM; SALARI MOHAMMAD

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Journal: FUEL AND COMBUSTION Year:2016 | Volume:8 | Issue:2 Page(s): 55-70

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Title

NUMERICAL ANALYSIS OF THE EFFECTS OF NEEDLE LIFT AND SEAT ON THE CAVITATION FLOW IN THE DIESEL INJECTOR NOZZLE

Author(s)

MAHDI MIRALAM | SALARI MOHAMMAD | Issue Writer Certificate

Keywords

INJECTORQ2

CAVITATIONQ1

SEAT SHAPEQ2

NEEDLE LIFTQ2

FLOW COEFFICIENTQ2

Abstract

In this paper, CAVITATION flow inside the INJECTOR nozzle has been numerically simulated using ANSYS Fluent v15. The validations were performed with experimental results of Winkhofler et al. (2001). The calculated results from the three dimensional numerical simulation of cavitating flow in the nozzle with mixture multi-phase cavitating flow model have good agreement with the experimental data. Several important parameters such as mass flow rate and velocity profiles were used for the validations. The CAVITATION model used in the simulations is Schnerr and Sauer CAVITATION model. Due to high Reynolds numbers, turbulence effects have been taken into account by RANS methods using RNG k-e model. PRESTO discretization method is used for pressure equation and second upwind discretization method is used for momentum equation. The discharge coefficient is computed for several CAVITATION numbers and NEEDLE LIFT. The results show that the NEEDLE LIFT and SEAT SHAPE of the nozzle have a strong influence on the volume fraction of diesel vapor and the discharge coefficient in the nozzle.

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APA: Copy

MAHDI, MIRALAM, & SALARI, MOHAMMAD. (2016). NUMERICAL ANALYSIS OF THE EFFECTS OF NEEDLE LIFT AND SEAT ON THE CAVITATION FLOW IN THE DIESEL INJECTOR NOZZLE. FUEL AND COMBUSTION, 8(2), 55-70. SID. https://sid.ir/paper/138627/en

Vancouver: Copy

MAHDI MIRALAM, SALARI MOHAMMAD. NUMERICAL ANALYSIS OF THE EFFECTS OF NEEDLE LIFT AND SEAT ON THE CAVITATION FLOW IN THE DIESEL INJECTOR NOZZLE. FUEL AND COMBUSTION[Internet]. 2016;8(2):55-70. Available from: https://sid.ir/paper/138627/en

IEEE: Copy

MIRALAM MAHDI, and MOHAMMAD SALARI, “NUMERICAL ANALYSIS OF THE EFFECTS OF NEEDLE LIFT AND SEAT ON THE CAVITATION FLOW IN THE DIESEL INJECTOR NOZZLE,” FUEL AND COMBUSTION, vol. 8, no. 2, pp. 55–70, 2016, [Online]. Available: https://sid.ir/paper/138627/en

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