An investigation of cross-corrugated heat exchanger primary surfaces for advanced intercooled-cycle aero engines (Part-II: Design optimization of primary surface)

Study on the turbulence model sensitivity for various cross-corrugated surfaces applied to matrix type heat exchanger

“…The flow characteristics and corresponding heat transfer mechanism happening in the heat exchanger matrix with the symmetric sinusoidal corrugation surface has been well studied and documented by previous works [11,12]. Fig.…”

“…7 shows schematics of two distinct flow patterns occurring in the present cross-corrugated heat exchanger matrix. According to the previous literatures [11,12], as a summary, two distinctive flow patterns are induced by the configuration of the crosscorrugated surface in the heat exchanger matrix. In reference to Fig.…”

“…Prandtl number is define as, / Pr n a = (12) where α represents the thermal diffusivity and can be defined as…”

“…Doo et al [11,12] studied the parametric study of three types of novel surface geometries derived from the primary corrugated surface with a sinusoidal profile. The turbulent flow considered in their study was modeled by the low Reynolds number k-ε turbulence model based on the Reynoldsaveraged Navier-Stoke (RANS) equations.…”

Characterizations of aerothermal performance of novel cross-corrugated plate heat exchangers for advanced cycle aero-engines

“…The undulation was designed to promote variations in the thermal boundary layer thickness and thus have the potential to enhance heat transfer. Five heat exchanger designs considered in Doo et al [3,4] were examined in the current study: The geometrical parameters and hydraulic diameters of each geometry are listed in Tables 1 and 2.…”