کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4638330 1632000 2016 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of the numerical scheme resolution on quasi-2D simulation of an automotive radial turbine under highly pulsating flow
ترجمه فارسی عنوان
اثر قطعنامه طرح عددی در شبیه سازی شبه دو بعدی توربین شعاعی خودرو در جریان بسیار پرتقال
کلمات کلیدی
توربوشارژر موشک، جریان پویا شبیه سازی توربین رادیال، انتخاب طرح عددی
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات ریاضیات کاربردی
چکیده انگلیسی

Automotive turbocharger turbines usually work under pulsating flow because of the sequential nature of engine breathing. However, existing turbine models are typically based on quasi-steady assumptions. In this paper a model where the volute is calculated in a quasi-2D scheme is presented. The objective of this work is to quantify and analyse the effect of the numerical resolution scheme used in the volute model. The conditions imposed upstream are isentropic pressure pulsations with different amplitude and frequency. The volute is computed using a finite volume approach considering the tangential and radial velocity components. The stator and rotor are assumed to be quasi-steady. In this paper, different integration and spatial reconstruction schemes are explored. The spatial reconstruction is based on the MUSCL method with different slope limiters fulfilling the TVD criterion. The model results are assessed against 3D U-RANS calculations. The results show that under low frequency pressure pulses all the schemes lead to similar solutions. But, for high frequency pulsation the results can be very different depending upon the selected scheme. This may have an impact in noise emission predictions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational and Applied Mathematics - Volume 291, 1 January 2016, Pages 112–126
نویسندگان
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