Studies on Oscillating Boundarylayer During the Ignition Transient of Dual-thrust Solid Rocket Motors

Chandrasekaran, Nichith; Sankar, Vigneshwaran; Padmanabhan, Sathyan; Kumar, VR Sanal; Sukumaran, Ajith; Mani, Sivabalan; Murugesh, Pavithra

doi:10.2514/6.2017-4691

Cited by 4 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[39][40][41][42][43][44][45] The Sanal flow choking, a compressible fluid flow effect, is a radical theory in advanced science of real-world fluid flow systems, [1] which is capable to provide solutions to many unanswered research questions in the continuum and non-continuum fluid flows moved ahead over the centuries. [46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62] Note that the non-continuum or nanoscale fluid flows obey all conservation laws of nature. Indeed, all fluids available in our nature are compressible.…”

Section: Introductionmentioning

confidence: 99%

The Physics of Detonation Chemistry: A Radical Theory in Predicting the Deflagration to Detonation Transition and Environmental Explosions

Kumar¹,

Chandrasekaran²,

Sankar³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

The theoretical finding of the Sanal-flow-choking [PMCID: PMC7267099] and streamtube flow choking (V.R.Sanal Kumar et al., Physics of Fluids, Vol.33, No.3, 2021, DOI: 10.1063/5.0040440) are methodological advancements in predicting the deflagration-to-detonation-transition (DDT) in the real-world-fluid flows (continuum/non-continuum) with credibility.[1,2] Herein, we provide a proof of the concept of the Sanal-flow-choking and streamtube-flow-choking causing DDT in wall-bounded and free-external flows. Once the streamlines compacted, the considerable pressure difference attains inside the streamtube and the flow gets accelerated to the constricted region for satisfying the continuity condition set by the conservation law of nature. If the shape of the streamtube in the internal/external flow is similar to the convergent-divergent (CD) duct the phenomenon of the Sanal-flow-choking and supersonic flow development occurs at a critical-total-to-static pressure ratio (CPR) in yocto to yotta scale systems and beyond, which leads to shock wave generation or detonation as the case may me. At the lower critical detonation or hemorrhage index, the CPR of the reacting flow and the critical blood-pressure-ratio (BPR) of the subjects (human being/animal) are unique functions of the heat-capacity-ratio (HCR) of the evolved gas in the CD duct (V.R.Sanal Kumar et al., Global Challenges, Wiley Publication, January 2021, DOI: 10.1002/gch2.202000076, PMCID: PMC7933821; Sanal Kumar V.R et al. Stroke, Vol. 52, Issue Suppl_11 March 2021, doi.org/10.1161/str.52.suppl_1.P804). In silico results are presented herein to establish the proof of the concept of the Sanal-flow-choking and streamtube-flow-choking causing shock-wave/detonation in diabatic flow systems and asymptomatic-hemorrhagic-stroke in biological systems. The physics of detonation chemistry presented herein sheds light for exploring environmental and supernova explosions.[107] In silico results reported herein provide an authentic answer to many unresolved research questions in Physics in general and aerospace, mechanical, biological, chemical, energy, environmental, nano and material sciences in particular.

show abstract

Section: Introductionmentioning

confidence: 99%

The Physics of Detonation Chemistry: A Radical Theory in Predicting the Deflagration to Detonation Transition and Environmental Explosions

Kumar¹,

Chandrasekaran²,

Sankar³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…[39][40][41][42][43][44][45] The Sanal ow choking, a compressible uid ow effect, is a radical theory in advanced science of real-world uid ow systems, [1] which is capable to provide solutions to many unanswered research questions in the continuum and non-continuum uid ows moved ahead over the centuries. [46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62] Note that the non-continuum or nanoscale uid ows obey all conservation laws of nature. Indeed, all uids available in our nature are compressible.…”

Section: Introductionmentioning

confidence: 99%

The Physics of Detonation Chemistry: A Radical Theory in Predicting the Deflagration to Detonation Transition

Kumar¹,

Chandrasekaran²,

Sankar³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

The theoretical finding of the Sanal-flow-choking [PMCID: PMC7267099] is a methodological advancement in predicting the deflagration-to-detonation-transition (DDT) in the real-world-fluid flows (continuum/non-continuum) with credibility.[1,2] Herein, we provide a proof of the concept of the Sanal-flow-choking and streamtube-flow-choking causing DDT in wall-bounded and free-external flows. Once the streamlines compacted, the considerable pressure difference attains inside the streamtube and the flow gets accelerated to the constricted region for satisfying the continuity condition set by the conservation law of nature. If the shape of the streamtube in the internal/external flow is similar to the convergent-divergent (CD) duct the phenomenon of the Sanal-flow-choking and supersonic flow development occurs at a critical-total-to-static pressure ratio (CPR) in yocto to yotta scale systems and beyond, which leads to shock wave generation or detonation as the case may me. At the lower critical detonation or hemorrhage index, the CPR of the reacting flow and the critical blood-pressure-ratio (BPR) of the subjects (human being/animal) are unique functions of the heat-capacity-ratio (HCR) of the evolved gas in the CD duct. In silico results are presented herein to establish the proof of the concept of the Sanal-flow-choking and streamtube-flow-choking causing shock-wave/detonation in diabatic flow systems and asymptomatic-hemorrhagic-stroke in biological systems. The physics of detonation chemistry presented herein sheds light for exploring supernova explosions.[107]

show abstract

Deflagration to Detonation Transition in Chemical Rockets with Sudden Expansion/Divergence Regions

Kumar

Chandrasekaran

Sankar

et al. 2020

AIAA Propulsion and Energy 2020 Forum

View full text Add to dashboard Cite

Studies on Oscillating Boundarylayer During the Ignition Transient of Dual-thrust Solid Rocket Motors

Cited by 4 publications

References 15 publications

The Physics of Detonation Chemistry: A Radical Theory in Predicting the Deflagration to Detonation Transition and Environmental Explosions

The Physics of Detonation Chemistry: A Radical Theory in Predicting the Deflagration to Detonation Transition and Environmental Explosions

The Physics of Detonation Chemistry: A Radical Theory in Predicting the Deflagration to Detonation Transition

Deflagration to Detonation Transition in Chemical Rockets with Sudden Expansion/Divergence Regions

Contact Info

Product

Resources

About