human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "parallel multiphysics simulations of charged particles in microfluidic flows"
  Abstract: The article describes parallel multiphysics simulations of charged particles in microfluidic flows with the waLBerla framework. To this end, three physical effects are coupled: rigid body dynamics, fluid flow modelled by a lattice Boltzmann algorithm, and electric potentials represented by a finite volume discretisation. For solving the finite volume discretisation for the electrostatic forces, a cell-centered multigrid algorithm is developed that conforms to the lattice Boltzmann meshes and the parallel communication structure of waLBerla. The new functionality is validated with suitable benchmark scenarios. Additionally, the parallel scaling and the numerical efficiency of the algorithms are analysed on an advanced supercomputer.

Connected through hyperedge HE-1 (induced by source paper "walberla a block structured high performance framework for multiphysics simulations"):
  with members:
    - "a modular and extensible software architecture for particle dynamics"
    - "lattice boltzmann benchmark kernels as a testbed for performance analysis"
    - "extreme scale block structured adaptive mesh refinement"
    - "dynamic load balancing techniques for particulate flow simulations"
    - "the maximum dissipation principle in rigid body dynamics with inelastic impacts"
    - "a local parallel communication algorithm for polydisperse rigid body dynamics"
    - "a comparative study of fluid particle coupling methods for fully resolved lattice boltzmann simulations"
    - "a scalable and extensible checkpointing scheme for massively parallel simulations"

Connected through hyperedge HE-2 (induced by source paper "a scalable and extensible checkpointing scheme for massively parallel simulations"):
  with members:
    - "a coupled lattice boltzmann method and discrete element method for discrete particle simulations of particulate flows"
    - "massively parallel algorithms for the lattice boltzmann method on nonuniform grids"
    - "a python extension for the massively parallel multiphysics simulation framework walberla"
    - "ultrascale simulations of non smooth granular dynamics"
    - "two computational models for simulating the tumbling motion of elongated particles in fluids"
    - "a survey of fault tolerance and fault recovery techniques in parallel systems"

Connected through hyperedge HE-3 (induced by source paper "a comparative study of fluid particle coupling methods for fully resolved lattice boltzmann simulations"):
  with members:
    - "two computational models for simulating the tumbling motion of elongated particles in fluids"
    - "all good things come in threes three beads learn to swim with lattice boltzmann and a rigid body solver"

Connected through hyperedge HE-4 (induced by source paper "a coupled lattice boltzmann method and discrete element method for discrete particle simulations of particulate flows"):
  with members:
    - "a comparative study of fluid particle coupling methods for fully resolved lattice boltzmann simulations"
    - "ultrascale simulations of non smooth granular dynamics"

Connected through hyperedge HE-5 (induced by source paper "ultrascale simulations of non smooth granular dynamics"):
  with members:
    - "simulation of floating bodies with the lattice boltzmann method"

Question: Please tell me which class the center node belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.CE(Computational Engineering, Finance, and Science)