flow. These eddy movements bring about mixing throughout the turbulent core. This process is often referred to as "eddy diffusion." The value of the eddy-mass diffusivity will be very much larger than the molecular diffusivity in the turbulent core.
2. Fluid dynamics
- In fluid dynamics, an eddy is the swirling of a fluid and the reverse current created when the fluid flows past stir bar. Thi
Flow around and through fish gills
Jeesoon Choi and Dongyeop Baek
School of Mechanical and Aerospace Engineering, Seoul National University
Abstract. An overall view of the flow over the fish gills is first described by using the active pump system and the passive ram ventilation. The concept of ram ventilation is introduced and its merits of reducing hydrodynamic drags and efficient e
※ 목표
1) Inlet 속도 변화에 따른 전체 속도와 압력의 변화를 관찰 (층류)
2) 난류를 고려한 시뮬레이션 결과와 고려하지 않은 시뮬레이션 결과의 차이 비교
3) Inlet 지름 변화에 따른 전체 속도와 압력의 변화를 관찰 (층류)
*주요 특징
· Sudden Expansion이 존재하는 Flow tube에서의 속도
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Ⅰ. 서론
1) 실험목적
열교환기는 상이한 온도의 두 물질간의 열전달을 증진시키고자 하는 기능을 지닌 장치이다.
대부분의 경우에, 열교환물질들은 두 개의 유체흐름들이다. 흐름간의 혼합현상을 방지하기 위하여, 두 유체들은 열전달면 또는 열교환기 표면을 구성하는 고체벽에 의하여 분리