Evaluation of thermal field in Buoyancy-induced flows by a Schlieren method

Devia, Francesco; Milano, G.; Tanda, Giovanni

doi:10.1016/0894-1777(93)90185-l

Cited by 4 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Schlieren, Shadowgraph, Interferometer are standard techniques used for visualization of flows at high speed by (Merzkirch 1987;Settles 2001, Slavica Ristić 2006.Both Schlieren and Shadowgraph techniques are sensitive to the first and the second derivatives of density perpendicular to light propagation direction, respectively. Schlieren method is used to visualize the turbulence phenomena and also used to measure heat transfer rate by Devia et al (1994).…”

Section: Introductionmentioning

confidence: 99%

Visualization of Shock Wave Phenomenon around a Sharp Cone Model at Hypersonic Mach Number in a Shock Tunnel using High Speed Schlieren Facility

Saiprakash¹,

Kumar²,

Sunil³

et al. 2019

JAFM

View full text Add to dashboard Cite

The flow field around a Sharp cone model configuration has been investigated by means of Schlieren facility in hypersonic shock tunnel. The time dependent evolution of flow around a cone of angle 11.38° with base radius of 150mm has been visualized for a flow Mach number M = 6.5. Experiments have been carried out with Helium as driver gas and air as test gas to visualize the hypersonic flow field. The flow establishment, steady state, and termination process of the hypersonic flow have been visualized for two different angles of attack, namely 0°&5°. Experimentally measured shock angle compares well with the theoretical and the computational study. The measured shock layer thickness compares well with the numerical simulation for both angles of attack.

show abstract

Section: Introductionmentioning

confidence: 99%

Visualization of Shock Wave Phenomenon around a Sharp Cone Model at Hypersonic Mach Number in a Shock Tunnel using High Speed Schlieren Facility

Saiprakash¹,

Kumar²,

Sunil³

et al. 2019

JAFM

View full text Add to dashboard Cite

show abstract

“…The optical method of the Schlieren technique has been successfully used for both detecting shock waves and visualizing turbulent phenomena in supersonic flow [4]. This technique is also being used to measure the heat transfer rates [15].…”

Section: Introductionmentioning

confidence: 99%

Schlieren Visualization of Shock Wave Phenomena over a Missile-Shaped Body at Hypersonic Mach Numbers

Saravanan

Nagashetty

Hegde

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

The flow over a missile-shaped configuration is investigated by means of Schlieren visualization in short-duration facility producing free stream Mach numbers of 5.75 and 8. This visualization technique is demonstrated with a 41 • full apex angle blunt cone missile-shaped body mounted with and without cavity. Experiments are carried out with air as the test gas to visualize the flow field. The experimental results show a strong intensity variation in the deflection of light in a flow field, due to the flow compressibility. Shock stand-off distance measured with the Schlieren method is in good agreement with theory and computational fluid dynamic study for both the configurations. Magnitude of the shock oscillation for a cavity model may be greater than the case of a model without cavity. The picture of visualization shows that there is an outgoing and incoming flow closer to the cavity. Cavity flow oscillation was found to subside to steady flow with a decrease in the free stream Mach number.

show abstract