http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
임인호(In Ho Lim),이기정(Ki Jung Lee),심우영(Woo Young Sim),양상식(Sang Sik Yang) 대한전기학회 2009 전기학회논문지 Vol.58 No.4
This paper reports on a flexible flap valve actuated by electromagnetic force under a constant pressure source. The flexible flap valve consists of the three main components: a flexible flap with a steel disk embedded in PDMS, an electromagnetic actuator and two glass plates with inlet and outlet. The flap valve is fabricated by SU-8 mold process, the EDM process and oxygen plasma treatment. The dimension of an assembled flap valve is 12 [㎜] × 20 [㎜] × 28 [㎜]. The stroke volume of the flap valve is measured for various pressures. And the time of the applied input voltage is varied to change the open time of the valve. When the input voltage of 30 [V] is applied for 0.25 [s], the minimum stroke volume of the flap valve is 40 [μL] at 70 [㎪].
정사각 덕트의 출구 영역에서 속도분포에 대한 실험적 연구
임인호(In-ho Lim),유영태(Young-Tae Yoo) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
A numerical simulation has been performed with the non-linear turbulence model proposed by Speziale(1987) coupled with the κ-ε equations coming from the renormalization group theory(RNG) derived by Yakhot et al(1992). The fully developed turbulent flow through a straight square duct, involing secondary motion is simulated.<br/> This paper represent computations of the interaction between measurement and numerical computation of turbulent flow on velocity distribution of outlet region in a square duct.<br/> RNG turbulent model was adapted and compared with the experimental data and the result of<br/> Standard κ-ε turbulent model. The predictions obtained with the RNG κ-ε model show improvements when compared with the Standard κ-ε model. Mean velocity, turbulence kinetic energy and Reynolds shear stresses are in quantitiative agreement with the experimental data. We feel that the<br/> RNG κ-ε model suggested in this paper can be a useful turbulence model for practical engineering.