Development of a Fast-Response Diamond Calorimeter Heat Transfer Gauge

Geraets, Rowland T. Penty; McGilvray, Matthew; Doherty, Luke J.; Morgan, Richard G.; James, Christopher M.; Buttsworth, David

doi:10.2514/1.t5688

Cited by 15 publications

(3 citation statements)

References 33 publications

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“…However, the surface junction thermocouples used in the present work are a relatively new matching-taper design relying on an oxide insulating layer and are suitable for operation at high temperatures. Previous experiments [18,16] have demonstrated the utility of these rugged devices in expansion tunnel flows with durations of up to 200 µs with peak heat transfer rates in excess of 100 MW m −2 . The present work investigates the application of these thermocouples in the low enthalpy, but long duration flows of TUSQ for the measurement of the time-averaged and fluctuating components of heat flux and flow stagnation temperature.…”

Section: Atomic Layer Thermopile (Altp) Sensors Have Amentioning

confidence: 99%

Time-resolved stagnation temperature measurements in hypersonic flows using surface junction thermocouples

Birch

Buttsworth

Zander

2020

Experimental Thermal and Fluid Science

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Section: Atomic Layer Thermopile (Altp) Sensors Have Amentioning

confidence: 99%

Time-resolved stagnation temperature measurements in hypersonic flows using surface junction thermocouples

Birch

Buttsworth

Zander

2020

Experimental Thermal and Fluid Science

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“…All pressure measurements have an uncertainty of ±7%, as per Hayne et al [10]. [12], flush-mounted in cylindrical bodies of diameter 10.50 mm and corner radius 0.13 mm. This has an effective spherical radius of 15.21 mm.…”

Section: A T6 Stalker Tunnelmentioning

confidence: 99%

“…In-house signal conditioning units, L1TA3, which have a bandwidth of 400 Hz were used. The measured temperature is processed into heat flux using the Sequential Function Specification Method [12]. The overall uncertainty in the heat flux is 10%.…”

Section: A T6 Stalker Tunnelmentioning

confidence: 99%

Analytical Method of Evaluating Nonuniformities in Shock Tube Flows: Application

et al. 2022

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Shock tube experiments are a primary means of obtaining ground test data for the hypersonic regime. Accurate characterisation of the test gas is crucial to understanding experimental results. However, characterisation of the flows produced behind the shockwave has historically proven challenging. This paper applies a methodology to calculate the shocked test gas properties using the experimentally recovered shock speed profile. Static pressure, Pitot pressure and heat transfer predictions are found to closely match the experimental data for a range of shock trajectories with both Argon and Air test gases. Thermochemical variations in the test gases are found to depend strongly upon variations in shock speed along the tube, and it is shown that characterisation of the test gases requires accommodating the influence of wave effects associated with the varying shock speed. Tube diameter is found to influence test time significantly, and also the magnitude of nonuniformities in the test gas. Location and number of shock timing stations in experimental facilities are found to play a vital role in the ability to accurately characterise the test gas of a given experiment.

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Development and commissioning of the T6 Stalker Tunnel

et al. 2021

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The T6 Stalker Tunnel is a multi-mode, high-enthalpy, transient ground test facility. It is the first of its type in the UK. The facility combines the original free-piston driver from the T3 Shock Tunnel with modified barrels from the Oxford Gun Tunnel. Depending on test requirements, it can operate as a shock tube, reflected shock tunnel or expansion tube. Commissioning tests of the free-piston driver are discussed, including the development of four baseline driver conditions using piston masses of either 36 kg or 89 kg. Experimental data are presented for each operating mode, with comparison made to numerical simulations. In general, high-quality test flows are observed. The calculated enthalpy range of the experimental conditions achieved varies from $$2.7\hbox { MJ kg}^{-1}$$ 2.7 MJ kg - 1 to $$115.0\hbox { MJ kg}^{-1}$$ 115.0 MJ kg - 1 . Graphical abstract

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Development of a Fast-Response Diamond Calorimeter Heat Transfer Gauge

Cited by 15 publications

References 33 publications

Time-resolved stagnation temperature measurements in hypersonic flows using surface junction thermocouples

Time-resolved stagnation temperature measurements in hypersonic flows using surface junction thermocouples

Analytical Method of Evaluating Nonuniformities in Shock Tube Flows: Application

Development and commissioning of the T6 Stalker Tunnel

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