3-D CFD model(s) of unconventional turbine

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F22%3A00365379" target="_blank" >RIV/68407700:21220/22:00365379 - isvavai.cz</a>

Result on the web

<a href="http://fs12120.fsid.cvut.cz/softlib/2022/FIRE_turbomachinery.zip" target="_blank" >http://fs12120.fsid.cvut.cz/softlib/2022/FIRE_turbomachinery.zip</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

3-D CFD model(s) of unconventional turbine

Original language description

The models are based on CFD approach using 3-D CFD. The focus is put on 3-D CFD while considering the complete 3-D geometry and a movable rotor. Different unconventional multi-entry turbomachinery has been designed, tested and evaluated. It is confirmed that 3-D CFD is capable of correct unsteady performance prediction, however the calculations are very time demanding. Different turbine designs were evaluated and optimized using simplified 1-D in-house tool as a basis. The target is to improve overall turbine performance under highly unsteady operation (6-cylinder ICE with 2 exhaust branches, each connecting 3 cylinders). The detailed CFD models (developed within this workpackage during 2019-2022) provided a lot of data and experience. The majority of these models are based on 3-D CFD approach which is supposed to provide detailed thermodynamic data. However, in-house advanced SW tool based on simplified 1-D CFD approch was created (in MS Excel) to allow for fast initial design of turbine inlet (this includes all the inlet channels, a spiral and possibly guide stator vanes, and certain level of an optimization) before it is applied to time consuming 3-D CFD calculations. The tool is also used for preliminary design optimization of turbine inlet design. Additional tools and post-processing scripts were developed to allow for detailed analysis of huge amount of CFD data (each design version is represented by more 2.0TB of data; up to now 12 variants were analyzed). Final step was to create a co-simulation between 3-D CFD (turbine) and 0-D/1-D CFD (6-cylinder turbocharged DI ICE) to predict turbine performance under realistic ICE conditions including the interaction with ICE to estimate BSFC benefits/penalties. Such data were analyzed in detail using in-house SW tools.

Czech name

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Czech description

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Type

R - Software

CEP classification

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OECD FORD branch

20301 - Mechanical engineering

Project

<a href="/en/project/TN01000026" target="_blank" >TN01000026: Josef Bozek National Center of Competence for Surface Vehicles</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Internal product ID

FIRE_turbomachinery

Technical parameters

Rozsáhlá databáze výsledků 3-D CFD RANS simulací turbin za různých pracovních podmínek včetně nestacionární pracovního cyklu. Databáze je tvořena výstupními soubory programu AVL FIRE (obecný 3-D CFD nástroj; Linux/Windows). Je řešena kompletní 3-D CFD geometrie s pohyblivým rotorem. Statistické zpracování vybraných integrálních/lokálních vlastností pak bylo provedeno pomocí vlastních SW nástrojů v programu MS Excel. Počáteční návrh tvaru je realizovám pomocí zjednodušeného 1-D CFD nástroje.

Economical parameters

3000000,-Kc (odhadovana komercni cena ASW, pokud by si to zakaznik zadal jako HS)

Owner IČO

68407700

Owner name

České vysoké učení technické v Praze v Praze, fakulta strojní