O niilismo de Schopenhauer.

Salviano, Jarlee

doi:10.11606/d.8.2001.tde-29052002-094254

Cited by 1 publication

(2 citation statements)

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“…The longitudinal distribution of the vortex intensity is shown in Figure 14 for a velocity of 0.4 m/s and Figure 15 for a velocity of 2.0 m/s. In the case of CRWP and RWP, the longitudinal vortex intensity tends to dissipate after passing VGs due to viscous effects [2,26,28]. Therefore, the installation of the second and third rows of VG reinforces the intensity of the longitudinal vortex as illustrated in Figures 12(c)-(f) and Figures 13(c)-(f) for velocities of 0.4 m/s and 2 m/s, respectively.…”

Section: Longitudinal Vortex Intensitymentioning

confidence: 86%

“…From Figures 10 and 11, it is observed that the longitudinal vortex in the X1 plane is stronger than that in the X2 plane for all types of VG with/without holes. This is due to viscous dissipation, which causes the longitudinal vortex to gradually weaken as the flow away from VG [28]. In the X3 plane, the longitudinal vortex strength increases compared to the X2 plane due to the addition of VGs, which results in an increase in fluid velocity in the downwash region [29].…”

Section: Flow Fieldmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Investigation of Heat Transfer and Fluid Flow Characteristics in a Rectangular Channel with Presence of Perforated Concave Rectangular Winglet Vortex Generators

Syaiful¹,

Lutfi²

2021

Heat Transfer - Design, Experimentation and Applications

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The high thermal resistance of the airside of the compact heat exchanger results in a low heat transfer rate. Vortex generator (VG) is one of the effective passive methods to increase convection heat transfer by generating longitudinal vortex (LV), which results in an increase in fluid mixing. Therefore, this study aims to analyze the convection heat transfer characteristics and the pressure drop of airflow in a rectangular channel in the presence of a concave rectangular winglet VG on a heated plate. Numerical calculations were performed on rectangular winglet pairs vortex generators (RWP VGs) and concave rectangular winglet pairs vortex generators (CRWP VGs) with a 45° angle of attack and one, two, and three pairs of VGs with and without holes. The simulation results show that the decrease in the value of convection heat transfer coefficient and pressure drop on CRWP with three perforated VG configuration is 4.63% and 3.28%, respectively, of the three pairs of CRWP VG without holes at an airflow velocity of 2 m/s.

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Section: Longitudinal Vortex Intensitymentioning

confidence: 86%

Section: Flow Fieldmentioning

confidence: 99%