...Sean C. Jenkins; Igor V. Shevchuk; Jens von Wolfersdorf; Bernhard Weigand Measurements of transient fluid temperature distributions were made in a high aspect ratio (4:1) internally ribbed two-pass channel relating to the measurement of heat transfer using the transient thermochromic liquid crystal...

...Cun-liang Liu; Hui-ren Zhu; Jiang-tao Bai; Du-chun Xu Film cooling performances of two kinds of converging-slot-hole ( console ) with different exit-entry area ratios have been measured using a new transient liquid crystal measurement technique, which can process the nonuniform initial wall...

... liquid crystal wide band formulation. Results show that the postprocessing procedure correctly succeeded in deducting undesired thermal fluxes across the plate in adiabatic effectiveness evaluation. The increasing blowing ratio effect leads to lower adiabatic effectiveness mean values, while it makes...

...G. Wagner; M. Kottula; P. Ott; B. Weigand; J. von Wolfersdorf liquid crystals plates (structures) turbomachinery The definitions of the symbols of Figs. 4 5 6 7 8 9 10 were missing: Effect of surface curvature using comparison between Eqs. (1) and (21) Deviation...

...G. Wagner; M. Kotulla; P. Ott; B. Weigand; J. von Wolfersdorf The transient liquid crystal technique is currently widely used for measuring the heat transfer characteristics in gas turbine applications. Usually, the assumption is made that the wall of the test model can be treated as a flat...

...Abd Rahim Abu Talib; Andrew J. Neely; Peter T. Ireland; Andrew J. Mullender This paper presents a novel experimental technique, which combines thermochromic liquid crystals with multiple steps in gas temperature, to determine heat transfer coefficient and adiabatic wall temperature distributions...

...John P. C. W. Ling; Peter T. Ireland; Lynne Turner New techniques for processing transient liquid crystal heat transfer experiment have been developed. The methods are able to measure detailed local heat transfer coefficient and adiabatic wall temperature in a three temperature system from a single...

... conductivity blade. Surface temperatures were measured using calibrated liquid crystals. The results show the effects of strong secondary vortical flows, laminar-to-turbulent transition, and also show good detail in the stagnation region. Contributed by the International Gas Turbine Institute...

...Andrew C. Chambers; David R. H. Gillespie; Peter T. Ireland; Geoffrey M. Dailey Transient liquid crystal techniques are widely used for experimental heat transfer measurements. In many instances it is necessary to model the heat transfer resulting from the temperature difference between a mixture...

.... Heat transfer measurements were made with a transient technique using thermochromic liquid crystal technique to measure a surface temperature. The technique allows full surface heat transfer coefficient measurements on all the walls. Flow measurements were made with a stereoscopic digital PIV system...

... in a conventional design by a 180 deg U-bend. Heat transfer distributions will be presented on the sidewalls of the passages. A transient liquid crystal technique is applied to measure the detailed heat transfer coefficient distributions inside the passages. Results for the three-hole supply cases are compared...

... band liquid crystal and direct heat flux gages (DHFGs). The liquid crystal methods were used for rough surface measurements and the DHFGs were used for the smooth surfaces. The measurements have been made at engine representative Mach and Reynolds numbers and inlet free-stream turbulence intensity...

... the interaction of ribs and various bleed conditions on internal cooling and to gain a better understanding of bulk air temperature in an internal passage. Steady-state heat transfer measurements were obtained using a transient technique with thermochromic liquid crystals. Trip strips were attached to one wall...

... as a mild stall behavior. Boundary layer development, particularly near stall condition, is discussed using surface flow visualization and the results of boundary layer calculations. An additional experimental study, using liquid crystal coating, provides necessary information on suction surface boundary...

...C. A. Hale; M. W. Plesniak; S. Ramadhyani The adiabatic, steady-state liquid crystal technique was used to measure surface adiabatic film cooling effectiveness values in the near-hole region X / D < 10 . A parametric study was conducted for a single row of short holes L / D ⩽ 3 fed by a narrow...