検索結果:　 160件中 1-20 を表示

1

交流とナノ秒パルスの重ね合わせ電圧印加によるDBDプラズマアクチュエータに関する実験的研究

木村太治 , 宇田川（高島）圭介 , 山岬裕之

… In the last decade, a Dielectric Barrier Discharge (DBD) plasma actuator driven by combination voltage of AC and nanosecond pulse has been studied. …

電気学会論文誌Ｂ（電力・エネルギー部門誌） 131(8), 701-707, 2011

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2

低レイノルズ数域における後方ステップ流れの制御に関する研究（安定性解析を利用したSynthetic jetによる再付着流れの制御）

山田俊輔 , 本阿弥眞治 , 岡本圭太 , 新田貴志 , 元祐昌廣 , 石川仁

… The objective of the present paper is to perform the effective control by the periodic disturbance in a backward facing step in low Reynolds number range. … At first, in order to clarify the overall characteristics of separating shear layer, the flow behavior of the transverse vortices in the main flow and a reattachment length on a lower side wall were investigated by Hot-wire anemometer and Micro Flow Sensor(MFS). …

日本機械学会論文集Ｂ編 77(775), 680-688, 2011

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3

寸法と強度が周期的変化をもつ縦渦対による壁面噴流の操縦

望月信介 , 山田誠治 , 亀田孝嗣

… Flow management of a plane turbulent wall jet has been studied experimentally by utilizing a streamwise vortex pair with periodic variation in strength and radius. … The magnitudes of the streamwise vorticity and secondary current induced by the vortex pair are weakened by the periodic variation. …

日本機械学会論文集Ｂ編 77(778), 1350-1359, 2011

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4

プラズマシンセティックジェットアクチュエータの平面せん断層における壁面せん断応力の直接計測

樋口丈浩 , 小河原加久治 , 望月信介

… One of the useful ways to measure the effect of the flow control devise is to use the wall-shear stress sensor to measure the wall-shear stress directly. … The sensor used in this paper measures the wall-shear stress, which is influenced by the flow control devise. …

日本機械学会論文集Ｂ編 77(777), 1239-1248, 2011

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5

Numerical Analysis for Film Boiling Heat Transfer of a Moving Hot Steel Plate

Park Il Seouk

… The cooling of the steel strip in ROT (run out table) of the hot rolling process is very important in that the ROT is the final process to control the mechanical properties of the final products. … The boiling phenomenon is one of the most well-understood heat transfer mechanism by the past a few decades research. …

ISIJ International 51(5), 743-747, 2011

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6

0136 菱形角柱群管路内でのポケット部による流れの影響(OS1-7 噴流,後流および剥離流れ現象の解明と制御,オーガナイズドセッション)

梅田眞三郎 , 飯嶋和明 , 新村浩一 , YANG Wen-Jei

… The promotion of jet-stream diffusion may enhance the efficiency of mechanical performance in various industrial devices such as fluid machinery and combustion equipments. … Both active and passive means were applied for the control of jet streams. …

流体工学部門講演会講演論文集 2010, 77-78, 2010-10-29

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7

S0502-2-2 シンセティックジェットによる低レイノルズ数後方ステップ流れの制御 : 逆位相噴射による影響([S0502-2]噴流,後流および剥離流れ現象の解明と制御(2))

眞嶋康裕 , 新田貴志 , 元祐昌廣 , 本阿弥眞冶

… In this study, a synthetic jet array which can be actuated individually at the different phase from those of adjacent synthetic jets is employed. … Influence of the phase difference on reattachment process in the low Reynolds number flow over a backward facing step is discussed. … Flow visualization and measurement of near-wall flow using the micro flow sensor are conducted. …

年次大会講演論文集 : JSME annual meeting 2010(2), 157-158, 2010-09-04

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8

S0502-2-1 マルチシンセティックジェットの干渉過程と三次元渦構造に及ぼすジェット孔ピッチの影響([S0502-2]噴流,後流および剥離流れ現象の解明と制御(2))

岩渕健二 , 居合徹 , 元祐昌廣 , 本阿弥眞冶

… A synthetic jet is a promising technique to promote the mixing and to control flow separation because of the periodic flow disturbance. … When the synthetic jet array is applied to the flow control in the fluid machinery, it is necessary to consider the optimal configuration of the jet devices. …

年次大会講演論文集 : JSME annual meeting 2010(2), 155-156, 2010-09-04

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9

Experimental Study on Thermal Stratification in a Reactor Vessel of Innovative Sodium-Cooled Fast Reactor : Mitigation Approach of Temperature Gradient across Stratification Interface

KIMURA Nobuyuki , MIYAKOSHI Hiroyuki , KAMIDE Hideki

… An innovative sodium-cooled fast reactor has been investigated as part of the fast reactor cycle technology development project (FaCT). … Thermal stratification after a scram is one of the main thermal loads of a reactor vessel (R/V). … R/V has an upper inner structure (UIS), which consists of perforated horizontal plates and control rod guide tubes, and has a slit in the radial direction for fuel handling. …

Journal of nuclear science and technology 47(9), 829-838, 2010-09-01

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10

Irradiation Experiments on a Mouse Using a Mild-Plasma Generator for Medical Applications

SAKAKITA Hajime , IKEHARA Yuzuru

… However, present devices have a risk of perforating the stomach wall during endoscopic submucosal dissection. … Therefore, to reduce this risk, irradiation is performed for a limited time, which leads to incomplete cessation of bleeding and recurrence of residual tumors. …

Plasma and Fusion Research 5(0), S2117-S2117, 2010

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11

菱形角柱群管路内でのポケット部の有無による流れの変化(流体工学,流体機械)

梅田眞三郎 , 飯嶋和明 , 新村浩一 , YANG Wen-Jei

… The promotion of jet-stream diffusion may enhance the efficiency of mechanical performance in various industrial devices such as fluid machinery and combustion equipments. … Both active and passive means were applied for the control of jet streams. …

日本機械学會論文集. B編 75(760), 2464-2471, 2009-12-25

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12

W203 DBDプラズマアクチュエータを用いた流体制御デバイスの研究開発(WS2-2 流れの制御と抵抗低減,ワークショップ)

瀬川武彦

… The properties of jets produced by dielectric barrier discharge plasma actuators (DBD-PA) have been investigated by using a particle image velocimetry (PIV) system. … A DBD-PA with a doughnut-shaped electrode generates annular wall normal jets by applying high voltage (V) and high frequency (f_p) signals between top and bottom electrodes. …

流体工学部門講演会講演論文集 2009, 615-618, 2009-11-06

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13

0134 ポケット部を有する菱形角柱群管路からの流れの可視化(OS1-6 噴流,後流および剥離流れの流動解析と応用,オーガナイズドセッション)

梅田眞三郎 , 飯嶋和明 , 新村浩一 , YANG Wen-Jei

… The promotion of jet-stream diffusion may enhance the efficiency of mechanical performance in various industrial devices such as fluid machinery and combustion equipments. … Both active and passive means were applied for the control of jet streams. …

流体工学部門講演会講演論文集 2009, 69-70, 2009-11-06

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14

0112 ベクトル制御された衝突噴流の構造解析(OS1-2 噴流,後流および剥離流れの流動解析と応用,オーガナイズドセッション)

位田貴彦 , 辻本公一 , 社河内敏彦 , 安藤俊剛

… In order to improve the heat transfer on the wall, impinging jets is used in various industrial applications, and has been investigated experimentally and numerically so far. … However, it is not enough to make clear the detail of vortical structure contributing to the heat transfer. … In the present paper, DNS (direct numerical simulation) of the impinging jet is conducted to investigate the heat transfer through the nozzle vector control. …

流体工学部門講演会講演論文集 2009, 27-28, 2009-11-06

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15

S0504-4-1 DBDプラズマアクチュエータ誘起噴流の高速化メカニズム解明に関する実験的研究(噴流,後流および剥離流れの流動解析と応用(その4))

瀬川武彦 , 吉田博夫 , 武川信也 , Choi Kwing-So

… The characteristics of wall normal jets produced by a dielectric barrier discharge (DBD) plasma actuator have been investigated by means of particle image velocimetry (PIV) system. … Variations of velocity distributions of coaxial annular jets produced by DBD plasma actuator are measured for amplitude of input voltage V_m 2.3 ⪯ …

年次大会講演論文集 : JSME annual meeting 2009(2), 201-202, 2009-09-12

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16

S0504-2-2 衝突噴流におけるノズルのベクトル制御に関するDNS(噴流,後流および剥離流れの流動解析と応用(その2))

位田貴彦 , 辻本公一 , 社河内敏彦 , 安藤俊剛

… In order to improve the heat, transfer on the wall, impinging jets is used in various industrial applications, and has been investigated experimentally and nomerically so far. … However, it is not enough to make clear the detail of vortical structure contributing to the heat transfer. … In the present paper, DNS (direct numerical simulation) of the impinging jet is conducted to investigate the heat transfer through the nozzle vector control. …

年次大会講演論文集 : JSME annual meeting 2009(2), 179-180, 2009-09-12

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17

915 誘電体バリア放電を用いた流体制御アクチュエータ(OS12-(2) 流体工学・熱流体,オーガナイズドセッション)

瀬川武彦 , 吉田博夫 , 武川信也 , Choi Kwing-So

… Velocity distributions produced by a dielectric barrier discharge plasma actuator (DBD-PA) with various shapes of electrodes were measured by using a PIV system. … By using two power supplies, tangential jets with different velocity distributions in time and space were induced independently in the vicinity of the wall from electrodes. …

茨城講演会講演論文集 : Ibaraki district conference 2009, 251-252, 2009-08-25

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18

Flow Management of a Plane Turbulent Wall Jet by a Streamwise Vortex Pair with Periodic Variation in Strength and Radius

MOCHIZUKI Shinsuke , YAMADA Seiji , KAMEDA Takatsugu

… Flow management of a plane turbulent wall jet has been studied experimentally by utilizing a streamwise vortex pair with periodic variation in strength and radius. … The magnitudes of the streamwise vorticity and secondary current induced by the vortex pair are weakened by the periodic variation. …

Journal of Fluid Science and Technology 4(2), 313-323, 2009

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19

Control of Flow and Heat Transfer Characteristics in an Impinging Jet with Acoustic Excitation

IIO Shouichiro , HANEDA Yoshiaki , MATSUBARA Yasumitsu , IKEDA Toshihiko

… The experimental study of flow field and heat transfer characteristics of a submerged, rectangular jet impinging normally on a flat plate is presented. … Four nozzle-to-surface spacing of H/w=3, 6, 10 and 20 with acoustic excitations was performed experimentally. … Velocity distributions with two excitation modes, symmetric and asymmetric excitation, are investigated by means of hot-wire measurement. …

Journal of Fluid Science and Technology 4(2), 304-312, 2009

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20

Direct Numerical Simulation of Active-Controlled Impinging Jets

TSUJIMOTO Koichi , ISHIKURA Taiga , SHAKOUCHI Toshihiko , ANDO Toshitake

… In order to improve the heat transfer on the wall, impinging jets are used in various industrial applications, and have been investigated experimentally and numerically so far. … However, it is not enough to make clear the detail of vortical structure contributing to the heat transfer. …

Journal of Fluid Science and Technology 4(2), 279-291, 2009

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