Faculty Profiles - Suzuki Hiroki

Papers - Suzuki Hiroki

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Turbulence-Model Validation of Wind-Tunnel-Blockage Effects on the Grid-Generated Turbulence Reviewed

Naru Itamura, Hiroki Suzuki, Shinsuke Mochizuki

Proceedings of the 7th Joint Conference on Renewable Energy and Nanotechnology (JCREN2018) Paper IN_03 - (4 pages) 2018.12

Energy Transport Mechanisms in the Outer Layer of the Turbulent Boundary Layer Subjected to Favourable Pressure Gradient Reviewed

Suyako Mizukami, Hiroki Suzuki, Shinsuke Mochizuki

Proceedings of the 7th Joint Conference on Renewable Energy and Nanotechnology (JCREN2018) Paper IN_04 - (4 pages) 2018.12

Numerical Simulation Study on the Incompressible Decaying Turbulent Flows Affected by the Divergence of the Viscous Terms Reviewed

Kazunobu Nomura, Hiroki Suzuki, Shinsuke Mochizuki

Proceedings of the 7th Joint Conference on Renewable Energy and Nanotechnology (JCREN2018) Paper IN_01 - (4 pages) 2018.12

Numerical Study on the Low Reynolds Number Steady Incompressible Turbulence due to Isotropic/Anisotropic Forcing Reviewed

Shotaro Jomura, Hiroki Suzuki, Shinsuke Mochizuki

Proceedings of the 7th Joint Conference on Renewable Energy and Nanotechnology (JCREN2018) Paper IN_02 - (4 pages) 2018.12

Numerical-Based Theoretical Analysis on the Decay of Homogeneous Turbulence affected by Small Strain based on Constant and Linear Strain Variations Reviewed

Hiroki Suzuki, Kenji Fujita, Shinsuke Mochizuki, Yutaka Hasegawa

Journal of Physics: Conference Series 1053 012039 - (7 pages) 2018.8

Numerical Investigation on the Sensitivity of Turbulence Statistics to Small Velocity Variations in Grid-Generated Turbulence based on k-ε model Reviewed

Yoshiaki Shikata, Hiroki Suzuki, Shinsuke Mochizuki

Advanced Experimental Mechanics 3 78 - 85 2018.8

Shear stress vector measurement using a circular sublayer plate with multiple pressure taps Reviewed

Dan Hua, Hiroki Suzuki, Shinsuke Mochizuki

AIAA Journal 56 ( 6 ) 2138 - 2144 2018

Local Wall Shear Stress Measurement with a Rectangular Plate Submerged in the Sublayer Reviewed

Hua Dan, Hiroki Suzuki, Shinsuke Mochizuki

Extended Abstracts of the Ninth JSME-KSME Thermal and Fluids Engineering Conference TFEC9-1021 - (5 pages) 2017.10

Validation Scheme for Effects of Wind-tunnel Blockage for Spatially Varying Acceleration Parameter Reviewed

Hiroki Suzuki, Kenji Fujita, Shinsuke Mochizuki

Advanced Experimental Mechanics 2 53 - 58 2017.8

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：The Japanese Society for Experimental Mechanics

<p>We have been studying a validation scheme for the effects of wind-tunnel blockage on grid-generated turbulence. The focus is the effects of the streamwise variation of the acceleration parameter characterizing the fluid acceleration. First, a method is used for calculating the value of the acceleration parameter from the profile of the streamwise mean velocity. Then, a validation scheme based on the spatially varying acceleration parameter is derived. This derived validation scheme builds on the standard k-ε model. The effects of the streamwise variation of the acceleration parameter are found to be somewhat large. Also, the decay exponent of grid-generated turbulence is sensitive to the streamwise variation of the acceleration parameter.</p>

DOI： 10.11395/aem.2.0_53

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Local Wall Shear Stress Measurements with a Thin Plate Submerged in the Sublayer in Wall Turbulent Flows Reviewed

Hua Dan, Hiroki Suzuki, Shinsuke Mochizuki

Experiments in Fluids 58 124 - (11 pages) 2017.8

Numerical investigation using an exact solution of the effects of non-solenoidality of the viscous terms on the incompressible flow Reviewed

Hiroki Suzuki, Shingo Hattori, Shinsuke Mochizuki

Journal of Fluid Science and Technology 12 ( 1 ) 16-00257 - (13 pages) 2017

Simple Model of Decay of Homogeneous Turbulence Affected by Weak Fluid Acceleration Reviewed

Hiroki Suzuki, Shinsuke Mochizuki

Proceedings of the 20th Australasian Fluid Mechanics Conference Paper No.411 - (4 pages) 2016.12

Basis Study on the Output-Voltage Variation of Constant-Temperature Anemometry at Freestream Velocity Reviewed

Hiroki Suzuki, Shingo Hattori, Shinsuke Mochizuki, Yutaka Hasegawa

Advanced Experimental Mechanics 1 36 - 41 2016.8

Effect of Fluid Acceleration due to Area Reduction of a Wind Tunnel on Temporally and Spatially Decaying Grid Turbulence Reviewed

Hiroki Suzuki, Shinnosuke Matsuo, Shinsuke Mochizuki, Yutaka Hasegawa

Advanced Experimental Mechanics 1 15 - 22 2016.8

Validation Scheme for Small Effect of Wind Tunnel Blockage on Decaying Grid-Generated Turbulence Reviewed

Hiroki Suzuki, Shinsuke Mochizuki, Yutaka Hasegawa

Journal of Fluid Science and Technology 11 ( 3 ) 16-00195 - (13 pages) 2016.7

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：The Japan Society of Mechanical Engineers, JSME

<p>This paper proposes a validation scheme for the effect of wind tunnel blockage on decaying grid-generated turbulence. This validation scheme was derived from the governing equations of the k-∈ model. Analytical solutions for the validation scheme were derived by introducing a model of the difference between the rate of change of the effect of fluid acceleration on the turbulent kinetic energy and that of the effect on its dissipation. The derived solutions include a decay exponent that excludes the acceleration effect, a parameter characterizing the acceleration, the initial anisotropy, and the model coefficient of the k-∈ model, and can be quantified by parameters which can be known. The physical meaning of the model was clarified. The derived solutions and model were confirmed to be accurate through numerical simulation. An equation for the decay exponent, which is also affected by the fluid acceleration, was developed using the derived solutions. This scheme was applied to the examination of the reduced fluid acceleration effect in a moderate-sized wind tunnel to measure the grid-generated turbulence. The fluid acceleration effect in the wind tunnel was confirmed to be small using the derived equations. The decay characteristics of the grid-generated turbulence in the wind tunnel were measured and were found to agree with those obtained in previous experiments.</p>

DOI： 10.1299/jfst.2016jfst0012

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Other Link： https://jlc.jst.go.jp/DN/JLC/20023288926?from=CiNii

Shinsuke Mochizuki, Hiroki Suzuki, Hitoshi Tokunaga, Takatsugu Kameda

Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows (ICJWSF2015) 185 ( 1 ) 317 - 324 2016

Mixing and diffusion in regular/fractal grid turbulence

Yasuhiko Sakai, Koji Nagata, Hiroki Suzuki, Yasumasa Ito

CISM International Centre for Mechanical Sciences, Courses and Lectures 568 17 - 73 2016

Research of Electric Power Regeneration using Automotive Cooling Fan (Improvement of Fan Efficiency by Diffuser) Reviewed

Yoshitaka Wagayama, Shinichi Oda, Yutaka Hasegawa, Hiroki Suzuki, Tatsuo Ushijima

Proceedings of the International Symposium on EcoTopia Science 2015 Paper No. 1035 - (1 page) 2015.12

Study on Pitch Motion Optimization of Wing-Stroke Wind Turbine Reviewed

Hironori Nakano, Yutaka Hasegawa, Hiroki Suzuki, Tatsuo Ushijima

Proceedings of the International Symposium on EcoTopia Science 2015 Paper No. 1028 - (1 page) 2015.12

A Small Wind Tunnel with Lower Fluid Acceleration Reviewed

Shinnosuke Matsuo, Hiroki Suzuki, Yutaka Hasegawa, Tatsuo Ushijima, Shinsuke Mochizuki

Proceedings of the 10th International Symposium on Advanced Science and Technology in Experimental Mechanics Paper No.A111 - (6 pages) 2015.11

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