@article{6579,
  abstract     = {{An explicit approach using symplectic time integration in conjunction with traditional finite difference spatial derivatives to solve the wave equation in moving media is presented. A simple operator split of this second order wave equation into two coupled first order equations is performed, allowing these split equations to be solved symplectically. Orders of symplectic time integration ranging from first to fourth along with orders of spatial derivatives ranging from second to sixth are explored. The case of cylindrical acoustic spreading in air under a constant velocity in a 2D square structured domain is considered. The variation of the computed time-of-flight, frequency, and wave length are studied with varying grid resolution and the deviations from the analytical solutions are determined. It was found that symplectic time integration interferes with finite difference spatial derivatives higher than second order causing unexpected results. This is actually beneficial for unstructured finite volume tools like OpenFOAM where second order spatial operators are the state-of-the art. Cylindrical acoustic spreading is simulated on an unstructured 2D triangle mesh showing that symplectic time integration is not limited to the spatial discretization paradigm and overcomes the numerical diffusion arising with the in-built numerical methods which hinder wave propagation.}},
  author       = {{Inguva, Venkatesh and Feldmann, Nadine and Claes, Leander and Koturbash, Taras and Hahn-Jose, Thomas and Koutcherov, Vladimir and Kenig, Eugeny}},
  journal      = {{Engineering Reports}},
  title        = {{{An explicit symplectic approach to solving the wave equation in moving media}}},
  doi          = {{10.1002/eng2.12573}},
  year         = {{2022}},
}

@inproceedings{33972,
  author       = {{Mügge, Nils and Kronberg, Alexander and Glushenkov, Maxim and Inguva, Venkatesh and Kenig, Eugeny Y.}},
  booktitle    = {{1st Conference on Energy, Environment and Digital Transition E2DT}},
  location     = {{Mailand, Italien}},
  title        = {{{A Thermal Model for Recuperative Heat Engines Operating with Dense Working Fluids}}},
  year         = {{2022}},
}

@article{40644,
  author       = {{Al-Lami, Abbas Jarullah Sangoor and Kenig, Eugeny Y. and Inguva, Venkatesh}},
  issn         = {{1359-4311}},
  journal      = {{Applied Thermal Engineering}},
  keywords     = {{Industrial and Manufacturing Engineering, Energy Engineering and Power Technology}},
  publisher    = {{Elsevier BV}},
  title        = {{{Numerical analysis of conjugate heat transfer within internally channeled tubes}}},
  doi          = {{10.1016/j.applthermaleng.2022.119596}},
  volume       = {{223}},
  year         = {{2022}},
}

@article{34228,
  author       = {{Mügge, Nils and Kronberg, Alexander and Glushenkov, Maxim and Inguva, Venkatesh and Kenig, Eugeny Y.}},
  isbn         = {{978-88-95608-95-2}},
  issn         = {{2283-9216}},
  journal      = {{Chemical Engineering Transactions}},
  location     = {{Mailand, Italien}},
  pages        = {{175--180}},
  title        = {{{A Thermal Model for Recuperative Heat Engines Operating with Dense Working Fluids}}},
  doi          = {{10.3303/CET2296030}},
  volume       = {{96}},
  year         = {{2022}},
}

@article{27375,
  author       = {{Schulz, Andreas Markus and Wecker, Christian and Inguva, Venkatesh and Lopatin, Alexey S. and Kenig, Eugeny Y.}},
  journal      = {{Chemical Engineering Science}},
  location     = {{Muster location}},
  publisher    = {{Elsevier}},
  title        = {{{A PLIC-based method for species mass transfer at free fluid interfaces}}},
  doi          = {{10.1016/j.ces.2021.117357}},
  volume       = {{250}},
  year         = {{2022}},
}

@article{44235,
  author       = {{Inguva, Venkatesh and Kenig, Eugeny Y. and Perot, J. Blair}},
  journal      = {{Journal of Computational Physics}},
  publisher    = {{Elsevier}},
  title        = {{{A front-tracking method for two-phase flow simulation with no spurious currents}}},
  volume       = {{456}},
  year         = {{2022}},
}

@article{23785,
  abstract     = {{<jats:title>Abstract</jats:title>
               <jats:p>In two-phase flows in which the Capillary number is low, errors in the computation of the surface tension force at the interface cause Front-Capturing methods such as Volume of Fluid (VOF) and Level-Set (LS) to develop interfacial spurious currents. To better solve low Capillary number flows, special treatment is required to reduce such spurious currents. Smoothing the phase indicator field to more accurately compute the curvature or adding interfacial artificial viscosity are techniques that can treat this problem. This study explores OpenFOAM, Fluent and StarCCM+ VOF solvers for the classical case of a static bubble/droplet immersed in a continuous aqueous phase, with the focus on the ability of these solvers to adequately reduce spurious currents. The results are expected to be helpful for practicing chemical engineers who use multiphase CFD solvers in their work.</jats:p>}},
  author       = {{Inguva, Venkatesh and Schulz, Andreas and Kenig, Eugeny}},
  issn         = {{1934-2659}},
  journal      = {{Chemical Product and Process Modeling}},
  pages        = {{121--135}},
  title        = {{{On methods to reduce spurious currents within VOF solver frameworks. Part 1: a review of the static bubble/droplet}}},
  volume       = {{17}},
  year         = {{2022}},
}