Abstract:In mixing ventilation systems, diffusers are often located on side walls and supply quasi-free air jets above the occupied zone. The data presented in this paper shows a new CFD 3D benchmark with two well-defined characteristic zones in the room, i.e., the quasi-free jet zone and the occupied zone. Measurement methods adequate for air velocity and speed measurement were applied: laser Doppler anemometry for the axial velocity component in the jet and low velocity thermal anemometry for the air speed in the occ… Show more
“…The axial and lateral velocity components were measuredin418 points (a regular grid of 10×10 mm) at the distance x=145 mm (1.1 D e ) from the nozzle. The results are presented in the file Inlet_boundary_cond.xlsx [36].…”
Section: Boundary Conditions In the Supply Openingmentioning
confidence: 99%
“…The velocity measurement results are presented in the file LDA&LVTA_results.xlsx, which is attached to the article [36]. [36].…”
Section: A C C E P T E D Accepted Manuscriptmentioning
confidence: 99%
“…The air velocity components can be measured using the LDA, ultrasonic anemometer and particle image velocimetry methods. In the present benchmark tests, LDA was used to measure two selected air velocity components [36]. The uncertainty of the velocity measurement with LDA was M A N U S C R I P T…”
Section: Jet Zonementioning
confidence: 99%
“…The novelty of the paper is the identification of the evolution of the air mean velocity distribution with the distance from the supply opening. The measurements in the jet region were focused on determining the jet volume and the momentum flux changes with the distance from the supply opening [36]. This paper also presents a method for CFD results validation and reporting, relevant for the new benchmark.…”
Section: Introductionmentioning
confidence: 99%
“…The nozzle profile was calculated using the third order polynomial equation[36].The contraction ratio of the nozzle was equal to 5.2.The air supply velocity U o was equal to 5.16 m/s, and the corresponding air change rate was equalto 2.4 h -1 . The exhaust opening had the same dimensions as the supply opening and was positioned near the floor on the same wall as the supply opening.…”
“…The axial and lateral velocity components were measuredin418 points (a regular grid of 10×10 mm) at the distance x=145 mm (1.1 D e ) from the nozzle. The results are presented in the file Inlet_boundary_cond.xlsx [36].…”
Section: Boundary Conditions In the Supply Openingmentioning
confidence: 99%
“…The velocity measurement results are presented in the file LDA&LVTA_results.xlsx, which is attached to the article [36]. [36].…”
Section: A C C E P T E D Accepted Manuscriptmentioning
confidence: 99%
“…The air velocity components can be measured using the LDA, ultrasonic anemometer and particle image velocimetry methods. In the present benchmark tests, LDA was used to measure two selected air velocity components [36]. The uncertainty of the velocity measurement with LDA was M A N U S C R I P T…”
Section: Jet Zonementioning
confidence: 99%
“…The novelty of the paper is the identification of the evolution of the air mean velocity distribution with the distance from the supply opening. The measurements in the jet region were focused on determining the jet volume and the momentum flux changes with the distance from the supply opening [36]. This paper also presents a method for CFD results validation and reporting, relevant for the new benchmark.…”
Section: Introductionmentioning
confidence: 99%
“…The nozzle profile was calculated using the third order polynomial equation[36].The contraction ratio of the nozzle was equal to 5.2.The air supply velocity U o was equal to 5.16 m/s, and the corresponding air change rate was equalto 2.4 h -1 . The exhaust opening had the same dimensions as the supply opening and was positioned near the floor on the same wall as the supply opening.…”
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