Numerical Study of Slot Jet Impingement
on a Cylinder by Using Two-Equation
Turbulence Models
Dushyant Singh and Saurabh Kango
Abstract In this paper, the numerical results of turbulence slot jet on a heated
cylinder are presented. The main objective of this study is to recognize suitable
RANs turbulence model, which predicts the accurate results as compared to the
previous published experimental results. To model turbulent flow, widely used k–ε
Std., k–ε realizable, k–ε RNG, k–ω Std. and k–ω SST turbulence models were used.
It was found that Std. k–ω turbulence models better predict as compared to other
turbulence model in the pressure distribution on the cylinder. However, the k–ε Std.
and k–ε RNG models better predict the heat transfer as compared to other turbulence
models.
Keywords Turbulence model · Jet impingement · Heat transfer
Nomenclature
C p Pressure coefficient.
D
Cylinder diameter, m.
h
Nozzle to target distance, m.
S
Slot width, m.
k f
Fluid thermal conductivity, W/m K.
Nu θ Local Nusselt number, Nu θ =
q
D
(T w −T jet )k f
.
P w Wall static pressure, Pa.
P α Wall static pressure, Pa.
q
Heat flux, W/m
2 .
Re s Reynolds number defined based on the slot width, Re S =
ρU jet S
μ
.
D. Singh (B)
Department of Mechanical Engineering, NIT Manipur, Imphal, Manipur, India
e-mail: dushyant7raghu@gmail.com
S. Kango
Department of Mechanical Engineering, Dr B R Ambedkar NIT Jalandhar, Jalandhar, India
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
A. K. Parwani et al. (eds.), Recent Advances in Mechanical Infrastructure,
Lecture Notes in Intelligent Transportation and Infrastructure,
https://doi.org/10.1007/978-981-33-4176-0_21
257
on a Cylinder by Using Two-Equation
Turbulence Models
Dushyant Singh and Saurabh Kango
Abstract In this paper, the numerical results of turbulence slot jet on a heated
cylinder are presented. The main objective of this study is to recognize suitable
RANs turbulence model, which predicts the accurate results as compared to the
previous published experimental results. To model turbulent flow, widely used k–ε
Std., k–ε realizable, k–ε RNG, k–ω Std. and k–ω SST turbulence models were used.
It was found that Std. k–ω turbulence models better predict as compared to other
turbulence model in the pressure distribution on the cylinder. However, the k–ε Std.
and k–ε RNG models better predict the heat transfer as compared to other turbulence
models.
Keywords Turbulence model · Jet impingement · Heat transfer
Nomenclature
C p Pressure coefficient.
D
Cylinder diameter, m.
h
Nozzle to target distance, m.
S
Slot width, m.
k f
Fluid thermal conductivity, W/m K.
Nu θ Local Nusselt number, Nu θ =
q
D
(T w −T jet )k f
.
P w Wall static pressure, Pa.
P α Wall static pressure, Pa.
q
Heat flux, W/m
2 .
Re s Reynolds number defined based on the slot width, Re S =
ρU jet S
μ
.
D. Singh (B)
Department of Mechanical Engineering, NIT Manipur, Imphal, Manipur, India
e-mail: dushyant7raghu@gmail.com
S. Kango
Department of Mechanical Engineering, Dr B R Ambedkar NIT Jalandhar, Jalandhar, India
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
A. K. Parwani et al. (eds.), Recent Advances in Mechanical Infrastructure,
Lecture Notes in Intelligent Transportation and Infrastructure,
https://doi.org/10.1007/978-981-33-4176-0_21
257