Abstract
Sprays play a significant role in many engineering applications such as liquid fuel injectors, industrial spray coaters, water sprinklers and agricultural sprayers. In most of the numerical study, Eulerian and Lagrangian formulations have been used for the gas and liquid phases, respectively. However, modeling of droplets using Lagrangian approach is computationally expensive for complex configuration. An Eulerian–Eulerian approach, also referred to as multi-fluid method in the literature, is developed in recent time to reduce the computation cost. This chapter presents a brief review of the recent studies on spray modeling using Eulerian multi-fluid method. Initially, one-dimensional transport of polydisperse evaporating water spray in a spatially varying velocity and temperature field is reported. A comprehensive analysis on droplet clustering pattern in an oscillating flow field is presented. Then, transport of polydisperse evaporating liquid spray in crossflow configuration using multi-fluid method is reported.
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Abbreviations
- \(B_{M}\) :
-
Splading mass transfer number
- \(C_{D}\) :
-
Coefficient of drag
- \(c_{pg}\) :
-
Specific heat of gas
- D :
-
Diameter of droplet
- \(D_{i,m}\) :
-
Mass diffusivity of the ith species in gas phase
- \(D_{P}\) :
-
Diameter of the pth size class
- \(h_{d}^{p}\) :
-
Enthalpy of the pth size class
- K :
-
Wave number
- \(K_{e}\) :
-
Evaporation constant
- \(k_{g}\) :
-
Thermal conductivity of gas phase
- L :
-
Axial length of channel
- \(L_{v}\) :
-
Latent heat of vaporization
- \(m^{(p)}\) :
-
Concentration of the pth size class
- \(\left[ {\dot{m}_{p} } \right]\) :
-
Mass transfer rate of a droplet
- n :
-
Number density of droplets
- \(S^{m}\) :
-
Mass source to continuous phase
- \(S^{\text{mom}}\) :
-
Momentum source to continuous phase
- \(S^{\text{enth}}\) :
-
Enthalpy source to continuous phase
- \({\text{Sc}}\) :
-
Schmidt number
- \({\text{Sh}}_{C}\) :
-
Corrected Sherwood number
- \(T_{g}\) :
-
Gas temperature
- \(T_{l}\) :
-
Liquid phase temperature
- t :
-
Time
- \(u_{d}^{p}\) :
-
Velocity of the pth size class
- \(u_{g}\) :
-
Gas phase velocity
- x :
-
Axial distance along channel
- \(Y_{i}\) :
-
Mass fraction of the ith species
- \(\rho_{l}\) :
-
Density of liquid phase
- \(\rho_{g}\) :
-
Density of gas phase
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Sarkar, S., Munshi, J., Mukhopadhyay, A., Sen, S. (2021). Polydisperse Spray Modeling Using Eulerian Method. In: De, A., Gupta, A., Aggarwal, S., Kushari, A., Runchal, A. (eds) Sustainable Development for Energy, Power, and Propulsion. Green Energy and Technology. Springer, Singapore. https://doi.org/10.1007/978-981-15-5667-8_19
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