PIV measurement of the flow field in rectangular tunnel

Park, Sang-Kyoo; Yang, Hee‐Man; Lee, Yong-Ho; Gong, Chang‐De

doi:10.5916/jkosme.2008.32.6.886

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…The flow characteristics in a rectangular tunnel by providing instantaneous velocity vectors, mean vorticity fields, and instantaneous kinetic energy using a PIV system were discussed [10,11]. The nature of polluted air flow in a rectangular tunnel was presented by a comparative study using the PIV data acquisition and the CFD analysis [12].…”

Section: Introductionmentioning

confidence: 99%

Flow Behavior in a Rectangular Tunnel Opened and Closed at Both Sides Using CFD

Lee¹

2012

Journal of the Korean Society of Marine Engineering

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：Most tunnel simulations have been focused on the thermal field and the critical velocity for suppression of hot back-layering flow in case of fire and on the characteristics of a tunnel fire in terms of the flame propagation and the toxic gas generation. In this paper, a comparative study of the flow characteristics of polluted air with no heat source in a tunnel model opened and closed at both end sides is implemented into a recognized CFD simulation code. The model is used to investigate the flow characteristics depending on the three different Reynolds numbers of 640, 1270 and 2120, which have been chosen by the flow velocities of 0.3, 0.6 and 1.0 m/s through the inlet. The results of this study have shown that the CFD predictive and experimental approaches are available in qualitatively studying the correlation of flow behaviors for a better tunnel design.

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Section: Introductionmentioning

confidence: 99%

Flow Behavior in a Rectangular Tunnel Opened and Closed at Both Sides Using CFD

Lee¹

2012

Journal of the Korean Society of Marine Engineering

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“…Velocity vector fields, pressure distributions, turbulence kinetic energy as air flow characteristics are discussed in a tunnel model open and closed at both end sides using CFD [14]. Velocity maps, vorticity maps, and kinetic energy distributions based on the reliable field measurement technique and lots of special implementations in the similar tunnel models are investigated by the PIV system [13,15].…”

Section: Introductionmentioning

confidence: 99%

Distribution of CO Concentration in Two Tunnel Models Using CFD

Lee¹

2012

Journal of the Korean Society of Marine Engineering

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：Carbon monoxide (CO) is a primary air pollutant as an indicator of air quality released from motor vehicle combustion. A comparative study of the distributions of CO concentration with no heat source in two tunnel models open and closed at both end sides is simulated with a commercial CFD code. The tunnel models are used to investigate the CO concentration distributions at three Reynolds numbers, which are computed by the inlet velocities of 0.3, 0.6 and 1.0 m/s. For a better tunnel design, the CFD predictive approaches are available in qualitatively studying the distributions of CO concentration. In the case of the tunnel open at both end sides in sixty seconds, the total CO concentrations are approximately twenty eight percent higher than those in the closed case.

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“…Bonhoff et al [4]. and mean vorticity fields [6,7]. As for the reliable whole field measurement technique and lots of special implementations in the PIV system, the instantaneous velocity fields, pressure distributions, vorticity maps, turbulent intensity, and kinetic energy fields are provided [8,5].…”

Section: Introdutionmentioning

confidence: 99%

Flow Characteristics of Polluted Air in a Rectangular Tunnel using PIV and CFD

Lee¹

2012

Journal of the Korean Society of Marine Engineering

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The flow characteristics of polluted air are analysed by comparing the results obtained from PIV(Particle Image Velocimetry) experiment and CFD(Computational Fluid Dynamics) commercial code. In order to simulate the polluted air flow, the olive oil has been used as tracer particles with the kinematic viscosity of air,  ×    m  s. The investigation has done in the range of Reynolds numbers of 870, 1730 and 2890 due to the inlet flow velocities of 0.3, 0.6, and 1.0 m/s, respectively. The average velocity and the pressure distributions are comparatively discussed with respect to the three different Reynolds numbers. The results show that the outlet flow rates at three different Reynolds numbers are equivalent of 165 to 167 percent of the inlet ones. The pressure drop occurs in the model closed at both end sides and the highest pressures at each Reynolds number are positioned at the top of the tunnel between the inlet and outlet.

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PIV measurement of the flow field in rectangular tunnel

Cited by 6 publications

References 3 publications

Flow Behavior in a Rectangular Tunnel Opened and Closed at Both Sides Using CFD

Flow Behavior in a Rectangular Tunnel Opened and Closed at Both Sides Using CFD

Distribution of CO Concentration in Two Tunnel Models Using CFD

Flow Characteristics of Polluted Air in a Rectangular Tunnel using PIV and CFD

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