Improved interpretation and validation of CFD predictions

Z. Popiolek; Arsen Krikor Melikov

Improved interpretation and validation of CFD predictions

Z. Popiolek
, Arsen Krikor Melikov

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

The mean velocity in rooms predicted by CFD simulations based on RANS equations differs from the mean (in time) magnitude of the velocity, i.e. the mean speed, in rooms measured by low velocity thermal anemometers with omnidirectional sensor. This discrepancy results in incorrect thermal comfort assessment by the CFD predictions as well as incorrect validation of the predicted velocity field. In this paper the discrepancies are discussed and identified, and a method for estimating of the mean speed based on the CFD predictions of mean velocity and kinetic turbulence energy is suggested. The method is applied and improvement in thermal comfort assessment is demonstrated.

Original language	English
Title of host publication	Procedings of Roomvent 2004
Volume	CD Rom
Place of Publication	Portugal
Publisher	University of Coimbra
Publication date	2004
Publication status	Published - 2004
Event	9th International Conference on Air Distribution in Rooms - University of Coimbra, Coimbra, Portugal Duration: 5 Sept 2004 → 8 Sept 2004 Conference number: 9

Conference

Conference	9th International Conference on Air Distribution in Rooms
Number	9
Location	University of Coimbra
Country/Territory	Portugal
City	Coimbra
Period	05/09/2004 → 08/09/2004

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@inproceedings{955b4b3053d34dc8b65e3fc6e8395cf5,

title = "Improved interpretation and validation of CFD predictions",

abstract = "The mean velocity in rooms predicted by CFD simulations based on RANS equations differs from the mean (in time) magnitude of the velocity, i.e. the mean speed, in rooms measured by low velocity thermal anemometers with omnidirectional sensor. This discrepancy results in incorrect thermal comfort assessment by the CFD predictions as well as incorrect validation of the predicted velocity field. In this paper the discrepancies are discussed and identified, and a method for estimating of the mean speed based on the CFD predictions of mean velocity and kinetic turbulence energy is suggested. The method is applied and improvement in thermal comfort assessment is demonstrated.",

author = "Z. Popiolek and Melikov, \{Arsen Krikor\}",

year = "2004",

language = "English",

volume = "CD Rom",

booktitle = "Procedings of Roomvent 2004",

publisher = "University of Coimbra",

note = "9th International Conference on Air Distribution in Rooms, Roomvent 2004 ; Conference date: 05-09-2004 Through 08-09-2004",

}

TY - GEN

T1 - Improved interpretation and validation of CFD predictions

AU - Popiolek, Z.

AU - Melikov, Arsen Krikor

N1 - Conference code: 9

PY - 2004

Y1 - 2004

N2 - The mean velocity in rooms predicted by CFD simulations based on RANS equations differs from the mean (in time) magnitude of the velocity, i.e. the mean speed, in rooms measured by low velocity thermal anemometers with omnidirectional sensor. This discrepancy results in incorrect thermal comfort assessment by the CFD predictions as well as incorrect validation of the predicted velocity field. In this paper the discrepancies are discussed and identified, and a method for estimating of the mean speed based on the CFD predictions of mean velocity and kinetic turbulence energy is suggested. The method is applied and improvement in thermal comfort assessment is demonstrated.

AB - The mean velocity in rooms predicted by CFD simulations based on RANS equations differs from the mean (in time) magnitude of the velocity, i.e. the mean speed, in rooms measured by low velocity thermal anemometers with omnidirectional sensor. This discrepancy results in incorrect thermal comfort assessment by the CFD predictions as well as incorrect validation of the predicted velocity field. In this paper the discrepancies are discussed and identified, and a method for estimating of the mean speed based on the CFD predictions of mean velocity and kinetic turbulence energy is suggested. The method is applied and improvement in thermal comfort assessment is demonstrated.

M3 - Article in proceedings

VL - CD Rom

BT - Procedings of Roomvent 2004

PB - University of Coimbra

CY - Portugal

T2 - 9th International Conference on Air Distribution in Rooms

Y2 - 5 September 2004 through 8 September 2004

ER -

Improved interpretation and validation of CFD predictions

Abstract

Conference

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