CFD MODELLING OF FORMULA STUDENT CAR INTAKE SYSTEM

Formula Student Car (FS) is an international race car design competition for students at universities of applied sciences and technical universities. The winning team is not the one that produces the fastest racing car, but the group that achieves the highest overall score in design, racing performance. The arrangement of internal components for example, predicting aerodynamics of the air intake system is crucial to optimizing car performance as speed changes. The air intake system consists of an inlet nozzle, throttle, restrictor, air box and cylinder suction pipes (runners). The paper deals with the use of CFD numerical simulations during the design and optimization of components. In this research article, two main steps are illustrated to develop carefully the design of the air box and match it with the suction pipe lengths to optimize torque over the entire range of operating speeds. Also the current intake system was assessed acoustically and simulated by means of 1-D gas dynamics using the software AVL-Boost. In this manner, before a new prototype intake manifold is built, the designer can save a substantial amount of time and resources. The results illustrate the improvement of simulation quality using the new models compared to the previous AVL-Boost models.The results illustrate the improvement of simulation quality using the new models compared to the previous AVL-Boost models.

Investigation and optimization of the acoustic performance of formula student race car intake system using coupled modelling techniques

The University of Miskolc has previously designed and prototyped several race cars for the Formula Student (FS) competition. Unfortunately, none of these cars utilized air intake systems meeting all the requirements of regulations. Intake system are used to feed the engine with sufficient amount of air for complete combustion inside the combustion chamber to produce maximum power. The air flow during flowing produce sound waves due to rate of turbulence and boundary layer separation, and according to standard regulation this sound should be controlled minimum as possible. Recent advances in modelling procedures for accurate performance prediction have led to the development of modelling methods for practical intake system components in commercial design. Engine designers need simple and fast modelling tools, especially in the preliminary design evaluation stages. In this study, commercial software Solidworks and advanced design software Creo 4.0 were used in addition for that Computational Fluid Dynamics (CFD) analysis is performed. Frequency domain analysis is made to receive behaviour of the entire system under assumed condition

Fluid dynamic and acoustic optimization methodology of a formula-student race car engine exhaust system using multilevel numerical CFD models

In this work a multilevel CFD analysis have been applied for the design of an engine exhaust system include manifold and muffler with improved characteristics of noise reduction and fluid dynamic response. The approaches developed and applied for the optimization process range from the 1D to fully 3D CFD simulation, exploring hybrid approaches based on the integration of a 1D model and 3D tools. Once the best configuration has been defined, the 1D-3D approach has been adopted to confirm the prediction carried out by means of the simplified approach, studying also the impact of the new configuration on the engine performances

3D Simulation of Gas Flow into the Formula Student Car Intake System

«Формула Студент» – это международное соревнование по конструированию гоночных автомобилей для студентов университетов прикладных наук и технических университетов. Побеждает не та команда, которая создаст самый быстрый гоночный автомобиль, а группа, которая добивается наивысшего общего балла по конструированию, гоночным показателям. Например, расположение внутренних компонентов, прогнозирование аэродинамики системы впуска воздуха имеют решающее значение для оптимизации характеристик автомобиля на различных режимах работы. Система впуска воздуха состоит из впускного патрубка, дроссельной заслонки, ограничителя мощности (рестриктора), воздушной камеры и впускных каналов головки цилиндра. В статье рассматривается использование численного моделирования CFD при конструировании и оптимизации этих компонентов. Проиллюстрированы два основных шага, предпринимаемых для разработки конструкции воздушной камеры и сопоставления ее с длиной всасывающей трубы для оптимизации крутящего момента во всем диапазоне рабочих режимов. Также данная система впуска была оценена акустически и смоделирована с помощью 1-D газовой динамики с использованием программного обеспечения AVL Boost. Таким образом, перед созданием нового прототипа впускного коллектора проектировщик может сэкономить значительное количество времени и ресурсов. Результаты иллюстрируют улучшение качества протекания рабочего процесса двигателя при модификации его модели в AVL BoostFormula Student Car (FS) is an international race car design competition for students at universities of applied sciences and technical universities. The winning team is not the one that produces the fastest racing car, but the group that achieves the highest overall score in design, racing performance. The arrangement of internal components for example, predicting aerodynamics of the air intake system is crucial to optimizing car performance as speed changes. The air intake system consists of an inlet nozzle, throttle, restrictor, air box and cylinder suction pipes (runners). The paper deals with the use of CFD numerical simulations during the design and optimization of components. In this research article, two main steps are illustrated to develop carefully the design of the air box and match it with the suction pipe lengths to optimize torque over the entire range of operating speeds. Also the current intake system was assessed acoustically and simulated by means of 1-D gas dynamics using the software AVL-Boost. In this manner, before a new prototype intake manifold is built, the designer can save a substantial amount of time and resources. The results illustrate the improvement of simulation quality using the new models compared to the previous AVL-Boost model