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$$\mathrm{r}\mathrm{m}\mathrm{s}$ 1226 2001 76-85 76 1 (Mamoru Tanahashi) (Shiki Iwase) (Toru Ymagawa) (Toshio Miyauchi) Department of Mechanical and Aerospaoe Engineering Tokyo Institute of$

1 $\mathrm{r}\mathrm{m}\mathrm{s}$ (Mamoru Tanahashi) (Shiki Iwase) (Toru Ymagawa) (Toshio Miyauchi) Department of Mechanical and Aerospaoe Engineering Tokyo Institute of Technology \Phi NS) $(1\cdot 7)$ (8-15) 1 (6) $(\eta)$ 8 $\mathrm{r}\mathrm{m}\mathrm{s}$ \mathit{1})$ $(\iota 05 (7) ( ) $(\lambda)$ $(\mathit{1}_{e})$ \lambda (8) $\mathrm{r}\mathrm{m}\mathrm{s}$ tit\lambda (12) Burgers (16) (1118) (15) DNS DNS

2 $\hat{\grave{\grave{\lambda}}}$ $\grave{\neg}\backslash \backslash ^{}4$ $\approx \mathrm{t}\triangleleft\wedge$ $10^{4}$ $10^{\backslash }$ $4^{\mathrm{S}}$ $\mathrm{v}$ $\alpha$ $\alpha^{\sigma}\circ$ $\Delta$ $\vee$ $\mathrm{o}$ $Re_{\lambda}10^{2}$ 77 $10^{1}$ $p$ $\circ \mathrm{p}$ 4 $10^{1}$ $10^{0}$ $10^{- 1}$ *Ruetsch&Maxey Vincent&Meneguzzi Jimenez et al Wang et a1(1996) present $10^{2}$ $10_{10^{3}}^{2}$ $10^{- 2}$ $10^{(1}$ $10^{1}$ $10^{0_{10^{1}}}$ $10^{\tau}$ $k/(\epsilon \nu)10^{- 1}/ /4$ 2 3 flatness factor R 2 DNS channel DNS 1 DNS DNS SR2201 SR8000 $Re_{\lambda}=220$ $Re_{a 0}=1900$ $Re_{\mathrm{r}}=800$ 1 $112\mathrm{G}\mathrm{B}$ DNS (HIT10) DNS

$78 $k$ $E(k)$ $(\epsilon)$ DNS $(\nu)$ DNS 3 flatness factor DNS flatness factor 3 DNS DNS 3 2 (3) 4 $t$ $*$ $\mathrm{r}\mathrm{m}\mathrm{s}$ $\eta$ $\eta$ $\mathrm{r}\mathrm{m}\mathrm{s}$$

3 78 $k$ $E(k)$ $(\epsilon)$ DNS $(\nu)$ DNS 3 flatness factor DNS flatness factor 3 DNS DNS 3 2 (3) 4 $t$ $*$ $\mathrm{r}\mathrm{m}\mathrm{s}$ $\eta$ $\eta$ $\mathrm{r}\mathrm{m}\mathrm{s}$ $\mathrm{t}\epsilon$ ) $Re_{\lambda}$ $\mathrm{r}\mathrm{m}\mathrm{s}$ Re\lambda =1754 DNS 2 \eta $8\sim 9$ rms 02 \eta $8\sim 9$ (4) \eta $8\sim 9$ $\langle$ Re\lambda =1754 rms 3 rms 6 $8\sim 9\eta$ \eta rms rms $\sim \mathrm{v}\wedge>\sim$ $00$ $*\mathrm{a}^{*}\mathrm{e}$ $- 0\epsilon$ $00r^{*}$ $s0$ $D^{*}$ 4 5 $(Re_{\lambda}=1754)$

$79 3 3 8\sim 9\eta rms 2\sim 3 $4\rangle$ ( $\mathrm{a}\mathrm{a}$ $Q= \frac{1}{2}$ ( H j-sjs ) (1) $W$$

4 \sim 9\eta rms 2\sim 3 $4\rangle$ ( $\mathrm{a}\mathrm{a}$ $Q= \frac{1}{2}$ ( H j-sjs ) (1) $W$ $S_{jj}$ $W_{ij}$ $A_{jj}$ $A_{\dot{y}}$ $= \frac{\partial u_{\mathrm{j}}}{\partial x_{j}}=s_{j}\cdot+w_{j}\cdot$ (2)

$80 $\eta$ $\mathrm{r}\mathrm{m}\mathrm{s}$ $\alpha=10$ (4) $\alpha=10$ $\Psi$ (9) $\alpha=$1 6 $\varphi=003$ ($\mathit{1}_{-f}\mathrm{j}$$

5 80 $\eta$ $\mathrm{r}\mathrm{m}\mathrm{s}$ $\alpha=10$ (4) $\alpha=10$ $\Psi$ (9) $\alpha=$1 6 $\varphi=003$ ($\mathit{1}_{-f}\mathrm{j}$ $\mathit{1}_{e}=\mathrm{r}\frac{e(k)}{k}dk/\mathrm{f}^{e(k)dk}$ (3) 6\sim 7 $\text{ }$ ffl \eta 8\sim 9 \not\in $\mu_{\backslash }$ $\grave{1}^{\beta}\mathrm{r}$ $- \mathrm{s}$ $\# g$ $\eta$ \lambda 1E 6 $- \mathrm{s}$ $t= $ 4 $ \mathrm{h}$ 7 $t=90$ 130 DNS $Re_{1\mathrm{n}0}= $ 9 8 ffl $(t=$ $90)$ $Re_{\mathrm{n}\iota 0}=500$ ffi $(t=130)$ $\langle$ $Re_{\mathrm{o}\iota 0}=700$ $\text{ }\tau $ 7 $130$ (a) $t=90$ $(\mathrm{b})t=$

$3A 8/3A $ _{\sqrt}\mathrm{a}$ 81 $(t=130)$ $\mathrm{a}\mathrm{a}$ $Re_{\omega0}=700$ Re 0 $=900$ 5% Re 0 $=700$ 4 2 $Q^{k}$ 9 Re 0 $=700$ 900 DNS $\eta$ rms 003 $\cross$ $\cross$ 4A $Re_{\alpha$

6 3A 8/3A $ _{\sqrt}\mathrm{a}$ 81 $(t=130)$ $\mathrm{a}\mathrm{a}$ $Re_{\omega0}=700$ Re 0 $=900$ 5% Re 0 $=700$ 4 2 $Q^{k}$ 9 Re 0 $=700$ 900 DNS $\eta$ rms 003 $\cross$ $\cross$ 4A $Re_{\alpha 0}=900$ $Re_{\mathrm{m}0}=700$ $\eta$ $ _{\sqrt}\mathrm{a}$ 10 $Re_{\mathrm{e}\alpha 0}=700$ braid ( ) core $Re_{\omega_{1}0}=900$ $\text{ }$ Re 0 $=700$ 11 (Re\Phi 0 $=1900$ $t=80)$ $Q^{k}=001$ \eta braid 2/3A 1/3A $(8-9\eta)$ 80% (8) $(\epsilon_{\mathrm{c}})$ $(\epsilon)$ $d\epsilon_{\mathrm{c}}=20$ \vee ) 10

$$\dot{\mathrm{q}}$ $y^{arrow}$ 82 $y$ $y$ $y^{*}$ 13 Channel 14 Channel (a) (b) $(Re_{\tau}=$ (a) $180)$ $400)$ (b) $(Re_{\tau}=$ braid 11 braid Braid 5 Channel 5 1Channel (1314)$

7 $\dot{\mathrm{q}}$ $y^{arrow}$ 82 $y$ $y$ $y^{*}$ 13 Channel 14 Channel (a) (b) $(Re_{\tau}=$ (a) $180)$ $400)$ (b) $(Re_{\tau}=$ braid 11 braid Braid 5 Channel 5 1Channel (1314) $Re_{\tau}=1\mathrm{O}\mathrm{O}$ 180 DNS $Re_{\tau}=180$ 400 DNS $\mathrm{r}\mathrm{m}\mathrm{s}$ $\eta$ $\eta$ $\mathrm{r}\mathrm{m}\mathrm{s}$ $Re_{\tau}=$ $400$ channel \eta 100

8 $Re_{\tau}=400$ 83

$$\text{ }$ $\mathrm{r}\mathrm{m}\mathrm{s}$ $\text{ }$ 84 $\mathrm{b}\mathrm{a}$ 3 channel 15 $40\nearrow$ $t$ 9\eta 16 \nearrow $Re_{\tau}=180$ $\mathrm{r}\mathrm{m}\mathrm{s}$ 09 $\ \tau=400$ 06$

9 $\text{ }$ $\mathrm{r}\mathrm{m}\mathrm{s}$ $\text{ }$ 84 $\mathrm{b}\mathrm{a}$ 3 channel 15 $40\nearrow$ $t$ 9\eta 16 \nearrow $Re_{\tau}=180$ $\mathrm{r}\mathrm{m}\mathrm{s}$ 09 $\ \tau=400$ 06 \sim 07 R 5 2Channel 17 $Re_{\tau}=180400$ 800 chamel DNS v $q=0\cdot 01$ $\mathrm{b}\grave{\grave{\mathrm{a}}}$ $\sigma$ channel (14) q channel $Re_{\tau}=800$ $5000\mathrm{F}$ Z+ $-J\mathrm{s}$ 4000J k\epsilon IOOOJ channel Adrian (17) 6 $\mathfrak{l}\mathrm{h}$ channel DNS $8\sim 9$ $k$ $\text{ }$ $-J\mathrm{s}$ $-r\mathrm{s}$ (B) (N ) DNS $7\mathrm{J}$ $\mathrm{j}$ (1) Jimenez A A Wray P G Saffman&R S RogaUo J Fluid Mech 255 (1993) 65 (2) $\mathrm{m}$ (3) $\mathrm{m}$ (4) $\mathrm{m}$ Tanahashi T Miyauchi &T Yoshida bansport Phenomena in Thermal-Fluids Engineering 2 p1256 Pacific Centre of Thermal-Fluids Engineering 1996 Tanahashi $\mathrm{t}$ Miyauchi &J Ikeda Simulation and Identification of Organized Structures in Flows p131 Kluwer Academic Publishers 1999 Tanahashi T Miyauchi &J Ikeda Proc 11th Symp Turbulent Shear Flows 1(1997) 4-17 $\mathrm{j}$ (5) Jimenez&AA Wray J Fluid Mech 373 (1998) 255 (6) ) (1999) 3237 $\mathrm{m}\mathrm{d}$ (7) M Tanahashi S Iwase A Uddin &T Miyauchi Turbulnce and Shear Flow

10 Eaton 85 $\mathrm{k}$ Phenomena-1 Eds S Banaerjee&J p79 Begell House Inc 1999 (8) M Tanahashi S Iwase J Ikeda &T Miyauchi Coherent Fine Scale Structure in Homogeneous Isotropic Turbulence (2001) preparing (9) Thermal Science and Engineering 8-3(2000) 29 (10) M Tanahashi T Miyauchi&K Matsuoka Turbulence Heat and Mass Transfer 2 p461 Delft University Press 1997 (11) M Tanahashi T Miyauchi &K Matsuoka Developments in Geophysical Turbulence p205 Kluwer Academic Publishers 2000 (12) M Tanahashi S Iwase &T Miyauchi Advanced in Turbulence 8(2000) 655 (13) (B ) (1999) 3244 (14) 18-4(1999)256 (15) (B ) (1999) 3884 (16) 31 (1999) 267 (17) R J Adrian C D Meinhart&C D Tomkins J Fluid Mech 422 (2000) 1

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$(Mamoru Tanahashi) Department of Mechanical and Aerospaoe Engineering Tokyo Institute of Technology ,,., ,, $\sim$,,$ 1601 2008 69-79 69 (Mamoru Tanahashi) Department of Mechanical and Aerospaoe Engineering Tokyo Institute of Technology 1 100 1950 1960 $\sim$ 1990 1) 2) 3) (DNS) 1 290 DNS DNS 8 8 $(\eta)$ 8 (ud 12 Fig