Heat flux estimation of a plasma rocket helicon source by solution of the inverse heat conduction problem

Mulcahy, James M.; Browne, David J.; Stanton, Kenneth T.; Díaz, Franklin R. Chang; Cassady, Leonard D.; Berisford, D. F.; Bengtson, Roger D.

doi:10.1016/j.ijheatmasstransfer.2008.10.031

Cited by 36 publications

(18 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The relationship is approximately linear over the limited range of RF power variation studied. A linear relation was also found by Mulcahy et al [25] between peak waste heat flux and RF power input, for experiments performed on the VASIMR R VX-50 prototype engine.…”

Section: Variation Of Rf Powersupporting

confidence: 72%

“…Use of this technique for the solution of 3-D boundary inverse heat conduction problems is well documented in the literature (e.g. [21,22,23,24,25]). The Alifanov Iterative Regularisation method is described in Section 1.4 in the context of this application.…”

Section: Inverse Solution Methodsmentioning

confidence: 99%

“…In performing an inverse heat transfer analysis for experiments conducted on the GCT of the VASIMR R VX-50 prototype engine, Mulcahy et al [25] used a homogeneous Neumann (insulated) boundary condition for the outer surface of the computational domain. This approach is suitable where the outer surface temperature is sufficiently low that radiation heat transfer is negligible.…”

Section: Initial and Boundary Conditionsmentioning

confidence: 99%

“…The boundary condition used in this work for the outer surface of the GCT contrasts to that used by Mulcahy et al [25], where an insulated boundary condition was used. Due to the higher temperatures reached in the current experiments the radiation boundary condition is required to realistically model the energy exchange in the device.…”

Section: Initial and Boundary Conditionsmentioning

confidence: 99%

See 3 more Smart Citations

Inverse estimate of heat flux on a plasma discharge tube to steady-state conditions using thermocouple data and a radiation boundary condition

Faoite¹,

Browne²,

Gamboa³

et al. 2014

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

The heat flux incident upon the inner surface of a plasma discharge tube during a helicon plasma discharge was estimated using an inverse method. Temperature readings were taken from the outer surface of the tube using thermocouples, and the temperature data were interpolated over the tube surface. A numerical inverse procedure based on the Alifanov iterative regularisation method was used to reconstruct the heat flux on the tube inner surface as a function of space and time. In contrast to previously-used inverse models for this application, the current model implements a thermal radiation boundary condition to realistically model the energy exchange in the device. Additionally in these experiments, steady-state operation was reached, and the accurate modelling of the steady-state condition was facilitated by the thermal radiation boundary condition. The variation of heat flux with helicon discharge power, propellant flowrate, and electromagnet current was studied, and it was found that the waste heat flux increased with applied RF power and propellant flowrate, and decreased with current supplied to the electromagnets, over the range of parameter variation tested.

show abstract

Section: Variation Of Rf Powersupporting

confidence: 72%

Section: Inverse Solution Methodsmentioning

confidence: 99%

Section: Initial and Boundary Conditionsmentioning

confidence: 99%

Section: Initial and Boundary Conditionsmentioning

confidence: 99%

See 2 more Smart Citations

Inverse estimate of heat flux on a plasma discharge tube to steady-state conditions using thermocouple data and a radiation boundary condition

Faoite¹,

Browne²,

Gamboa³

et al. 2014

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

show abstract

“…These material property data have been collated to aid in the materials selection and design of a gas containment tube (GCT) for the helicon section of the Variable SpecificImpulse Magnetoplasma Rocket (VASIMR ® ) [2][3][4][5], an advanced electric propulsion rocket currently being developed by the Ad Astra Rocket Company, Houston, Texas. This dataset can be used in the engineering design of ceramic component with complementary material requirements, such as the selection of materials for microwave and RF waveguide windows, dielectric components in ion engines and hall thrusters, dielectric heat spreaders in electronics, as well as components for other advanced plasma devices such as ITER [6,7].…”

mentioning

confidence: 99%

Regression analysis of temperature-dependent mechanical and thermal properties of dielectric technical ceramics

2012

Self Cite

View full text Add to dashboard Cite

Inverse estimation of near-field temperature and surface heat flux via single point temperature measurement

Shu

Xie

et al. 2016

Heat Mass Transfer

View full text Add to dashboard Cite

Heat flux estimation of a plasma rocket helicon source by solution of the inverse heat conduction problem

Cited by 36 publications

References 18 publications

Inverse estimate of heat flux on a plasma discharge tube to steady-state conditions using thermocouple data and a radiation boundary condition

Inverse estimate of heat flux on a plasma discharge tube to steady-state conditions using thermocouple data and a radiation boundary condition

Regression analysis of temperature-dependent mechanical and thermal properties of dielectric technical ceramics

Inverse estimation of near-field temperature and surface heat flux via single point temperature measurement

Contact Info

Product

Resources

About