Measurement of turbulence characteristics in a closed volume with artificial turbulence

Semenov, E. S.

doi:10.1007/bf00757231

Cited by 33 publications

(17 citation statements)

References 2 publications

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“…The oscillating grid apparatus also generated a substantial recirculating mean flow in the turbulence chamber (Thompson and Turner 1975;Brumley and Jirka 1987;Dohan and Sutherland 2002). Semenov (1965) and Fallon and Rogers (2002) also reported substantial mean velocity in their gas-phase apparatuses. The smallest relative mean velocity was reported for the gas-phase apparatus of Birouk et al (1996) for a large Reynolds number flow.…”

Section: Discussionmentioning

confidence: 94%

A novel laboratory apparatus for simulating isotropic oceanic turbulence at low Reynolds number

Webster

Brathwaite

Yen

2004

Limnology & Ocean Methods

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A new experimental apparatus to simulate oceanic turbulence at low Reynolds number in the laboratory is described. Actuators located at each corner of a cubic Plexiglas box generated synthetic jets that interacted to create turbulent flow at the center of the saltwater apparatus. Four turbulent intensity levels were established, and velocity measurements were performed using digital particle image velocimetry. The flow characteristics in the center of the apparatus were confirmed to be nearly isotropic and homogeneous. The range of the dissipation rate (10−3 to 1 cm2s−3) and the Kolmogorov microscale (0.03 to 0.2 cm) agreed well with natural oceanic environments in the coastal zone, and the length scales and magnitude of the velocity and strain rate fluctuations were appropriate for zooplankton studies. The flow characteristics compared favorably with previous approaches for generating turbulence in the laboratory, in particular, oscillating‐grid apparatus. The current design also possessed increased simplicity, controllability, and transportability. Future objectives include studying the behavioral response of zooplankton to turbulent fluid motions.

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Section: Discussionmentioning

confidence: 94%

A novel laboratory apparatus for simulating isotropic oceanic turbulence at low Reynolds number

Webster

Brathwaite

Yen

2004

Limnology & Ocean Methods

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“…The fan-stirred combustion chamber was developed by Groff [11], based on an original concept of Semenov [26]. A similar arrangement has been used by Abdel-Gayed and coworkers [9,10].…”

Section: Apparatusmentioning

confidence: 99%

Flame surface properties of premixed flames in isotropic turbulence: Measurements and numerical simulations

Kwon

Driscoll

et al. 1992

Combustion and Flame

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An experimental and theoretical investigation of free turbulent premixed flames propagating in isotropic turbulence at neutrally stable preferential diffusion conditions is described. Experiments were limited to the wrinkled thin laminar ftamelet regime and involved mixtures of hydrogen, air, and nitrogen ignited within a fan-stirred combustion chamber. Measurements included flame tomography for flame surface statistics and two-point laser velocimetry for unburned gas turbulence properties. Flame surface properties were numerically simulated using a two-dimensional flame propagation algorithm combined with statistical time series simulation of unburned gas velocities along the flame surface. Measurements showed progressively increasing flame radius fluctuations, flame surface fractal dimensions, and turbulent/laminar flame perimeters with increasing mean frame radius. The rate of increase of these properties all increased with increasing turbulence intensities relative to the laminar flame speed. Simulated flame properties duplicated these trends but underestimated the effects of turbulence-a deficiency mainly attributed to the limitations of a two-dimensional simulation. Extension of the method to a three-dimensional simulation, to obtain a more definitive evaluation of the simulation, appears to be computationally feasible.

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“…14. In a treatment of turbulence in a bomb, Semenov 20 develops a series of equations that can be used to analyze hot wire results for conditions similar to engine operation. In a treatment of turbulence in a bomb, Semenov 20 develops a series of equations that can be used to analyze hot wire results for conditions similar to engine operation.…”

Section: Hot Wire Anemometer Measuring Techniquementioning

confidence: 99%

Turbulence and Turbulent Combustion in Spark-Ignition Engines

Tabaczynski

1979

Energy and Combustion Science

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Measurement of turbulence characteristics in a closed volume with artificial turbulence

Cited by 33 publications

References 2 publications

A novel laboratory apparatus for simulating isotropic oceanic turbulence at low Reynolds number

A novel laboratory apparatus for simulating isotropic oceanic turbulence at low Reynolds number

Flame surface properties of premixed flames in isotropic turbulence: Measurements and numerical simulations

Turbulence and Turbulent Combustion in Spark-Ignition Engines

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