Výsledky vyhledávání - "Vítek Oldřich"

Akademický článek

Prediction of Pulsating Turbine Operation Using 1-D - 3-D Co-Simulation

Autor: Pacoň Lukáš, Vítek Oldřich, Doleček Vít, Macek Jan, Hořenín Jindřich

Publikováno v: Journal of Mechanical Engineering, Vol 72, Iss 3, Pp 81-96 (2022)

This paper describes a possible approach of designing an unconventional turbocharger using co-simulation method. Our goal is to design turbochargers running optimally during pulsating and transient modes. It means to develop a tool capable of co-simu

Externí odkaz: https://doaj.org/article/84c6f389e25c43a0970b29e6264ba22e

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Akademický článek

Optimization of 2‑Stage Turbocharged Gas SI Engine Under Steady State Operation

Autor: Vítek Oldřich, Macek Jan, Klíma Jiří, Vacek Martin

Publikováno v: Journal of Middle European Construction and Design of Cars, Vol 15, Iss 2, Pp 9-36 (2017)

The proposed paper deals with an optimization of a highly-turbocharged large-bore gas SI engine. Only steady state operation (constant engine speed and load) is considered. The paper is mainly focused on theoretical potential of 2-stage turbocharging

Externí odkaz: https://doaj.org/article/a0f2303ae3814ab7be1073beac42c5ad

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Akademický článek

Statistical Analysis of Detailed 3-D CFD LES Simulations with Regard to CCV Modeling

Autor: Vítek Oldřich, Macek Jan, Pavlovic Zoran, Tatschl Reinhard

Publikováno v: Journal of Middle European Construction and Design of Cars, Vol 14, Iss 1, Pp 1-16 (2016)

The paper deals with statistical analysis of large amount of detailed 3-D CFD data in terms of cycle-to-cycle variations (CCVs). These data were obtained by means of LES calculations of many consecutive cycles. Due to non-linear nature of Navier-Stok

Externí odkaz: https://doaj.org/article/3a1c6f3573dc4460baa23456adfee797

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Akademický článek

Knowledge Transfer from Detailed 3-D CFD Codes to System Simulation Tools – CCV Modeling in SI Engine

Autor: Vítek Oldřich, Macek Jan, Poetsch Christoph, Tatschl Reinhard

Publikováno v: Journal of Middle European Construction and Design of Cars, Vol 14, Iss 1, Pp 17-32 (2016)

The paper deals with CCV knowledge transfer from reference data (either experiments or 3-D CFD data) into system simulation SW tools (based on 0-D/1-D CFD). It was verified that CCV phenomenon can be modeled by means of combustion model perturbations

Externí odkaz: https://doaj.org/article/c1a57b1f8ec24a1d930c5fba93e8a4d8

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Akademický článek

Application of Les, Pans and Rans to a Case of Intake Channel Steady Flow Test Bench

Autor: Vítek Oldřich, Tichánek Radek, Hatschbach Petr

Publikováno v: Journal of Middle European Construction and Design of Cars, Vol 13, Iss 3, Pp 14-23 (2015)

The paper deals with evaluation of intake channel flow properties (discharge coefficient, tumble and swirl ratio) using both 3-D CFD simulation and measurement. Sensitivity of different calculation parameters was tested. The most important ones are m

Externí odkaz: https://doaj.org/article/531d73bed45e40069cc0e5f2a16f04f7

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