Experimental study of heat transfer in an in-line tube bundle under reciprocating pulsating cross-flow: effects of Prandtl number and waveform asymmetry
Description
This dataset contains operating parameters, similarity criteria, and measurement uncertainties for 180 pulsating-flow experimental regimes conducted on an 8×8 in-line tube bundle (D = 10 mm, S_L/D = S_T/D = 1.3) with water as the working fluid. Experiments cover the parameter ranges Re = 1200-3400, Pr = 3.5-5.0, A/D = 5-15, f = 0.18-0.45 Hz, and duty cycle psi = 0.2-0.5. The dataset includes the Nusselt number under pulsating flow (Nu_p), the heat transfer enhancement ratio (Nu_p/Nu_st), derived similarity parameters (Strouhal number, Fourier number, combined parameter (A/D)St), and expanded measurement uncertainties at the 95% confidence level evaluated in accordance with the GUM framework. Full description of the experimental methodology and data reduction procedure is provided in the associated manuscript.
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Steps to reproduce
Experiments were conducted on a purpose-built physical model of a tubular heat exchanger with an 8x8 in-line tube bundle (D = 10 mm, S_L/D = S_T/D = 1.3) and a rectangular channel cross-section of 107x107 mm, using water as the working fluid. Flow pulsations were generated by a double-acting hydraulic cylinder controlled by a PLC-based pneumatic system. The Reynolds number, Prandtl number, pulsation frequency, amplitude, and duty cycle were maintained at target values by a closed-loop control algorithm. Heat transfer coefficients were determined from overall heat transfer coefficients measured using pre-calibrated Pt1000 RTDs. Full details of the experimental setup, instrumentation, and data reduction procedure are provided in the associated manuscript.
Institutions
- Kazan State Power Engineering UniversityTatarstan Republic, Kazan’