Search Results - "Lohner, Rainald"

Adjoint-based estimation of sensitivity of clinical measures to boundary conditions for arteries by Löhner, Rainald, Antil, Harbir, Mut, Fernando, Cebral, Juan

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Computational hemodynamics framework for the analysis of cerebral aneurysms by Mut, Fernando, Löhner, Rainald, Chien, Aichi, Tateshima, Satoshi, Viñuela, Fernando, Putman, Christopher, Cebral, Juan R.

“…Assessing the risk of rupture of intracranial aneurysms is important for clinicians because the natural rupture risk can be exceeded by the small but…”
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A coupled fluid FEM-DEM technique for predicting blasting operations in tunnels by Zárate, Francisco, Gonzalez, José M., Miquel, Juan, Löhner, Rainald, Oñate, Eugenio

“…We present recent developments in the coupling of the finite element method (FEM) and the discrete element method (DEM) for the analysis of rock blasting…”
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Towards overcoming the LES crisis by Löhner, Rainald

“…Industrial large-eddy simulation (LES), i.e. overnight runs with degrees of freedom (DOFs) and timesteps, has been one of the top priorities of CFD research…”
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Adaptive embedded and immersed unstructured grid techniques by Löhner, Rainald, Cebral, Juan R., Camelli, Fernando E., Appanaboyina, S., Baum, Joseph D., Mestreau, Eric L., Soto, Orlando A.

“…Embedded mesh, immersed body or fictitious domain techniques have been used for many years as a way to discretize geometrically complex domains with structured…”
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The Jameson way by Löhner, Rainald

“…•Lifetime of achievements;•Lessons learned: Keep doing research; stay with the problem; Keeprunning cases; code, and code clearly; first solve fast, then solve…”
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Neural network representation of time integrators by Löhner, Rainald, Antil, Harbir

“…Deep neural network (DNN) architectures are constructed that are the exact equivalent of explicit Runge–Kutta schemes for numerical time integration. The…”
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NINNs: Nudging induced neural networks by Antil, Harbir, Löhner, Rainald, Price, Randy

“…Nudging induced neural networks (NINNs) algorithms are introduced to control and improve the accuracy of deep neural networks (DNNs). The NINNs framework can…”
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Detailed simulation of viral propagation in the built environment by Löhner, Rainald, Antil, Harbir, Idelsohn, Sergio, Oñate, Eugenio

“…A summary is given of the mechanical characteristics of virus contaminants and the transmission via droplets and aerosols. The ordinary and partial…”
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Improving the speed and accuracy of projection-type incompressible flow solvers by Löhner, Rainald, Yang, Chi, Cebral, Juan, Camelli, Fernando, Soto, Orlando, Waltz, Jacob

“…Superseding so-called first-generation incompressible flow solvers of the projection type (based on Taylor–Galerkin advection, second-order pressure damping…”
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Fluid dynamics of flapping aquatic flight in the bird wrasse: three-dimensional unsteady computations with fin deformation by Ramamurti, Ravi, Sandberg, William C, Löhner, Rainald, Walker, Jeffrey A, Westneat, Mark W

“…Many fishes that swim with the paired pectoral fins use fin-stroke parameters that produce thrust force from lift in a mechanism of underwater flight. These…”
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High fidelity modeling of aerosol pathogen propagation in built environments with moving pedestrians by Löhner, Rainald, Antil, Harbir

“…A high fidelity model for the propagation of pathogens via aerosols in the presence of moving pedestrians is proposed. The key idea is the tight coupling of…”
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Postprocessing‐based interpolation schemes for nested Cartesian finite difference grids of different size by Figueroa, Alejandro, Löhner, Rainald

“…Summary Nested Cartesian grid systems by design require interpolation of solution fields from coarser to finer grid systems. While several choices are…”
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Study of underwater explosion near rigid cylinder column with numerical method by Li, Lingquan, Airaudo, Facundo Nicolas, Löhner, Rainald

“…A finite volume method with five-equation model for multi-fluid is implemented in a three-dimensional unstructured vertex centered code, FEFLO. Air, water, and…”
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High‐fidelity digital twins: Detecting and localizing weaknesses in structures by Löhner, Rainald, Airaudo, Facundo, Antil, Harbir, Wüchner, Roland, Meister, Fabian, Warnakulasuriya, Suneth

“…An adjoint‐based procedure to determine weaknesses, or, more generally, the material properties of structures is developed and tested. Given a series of load…”
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Blood flow modeling in carotid arteries with computational fluid dynamics and MR imaging by Cebral, Juan R, Yim, Peter J, Löhner, Rainald, Soto, Orlando, Choyke, Peter L

“…The authors' goal was to develop a noninvasive method for detailed assessment of blood flow patterns from direct in vivo measurements of vessel anatomy and…”
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Adjoint-based determination of weaknesses in structures by Airaudo, Facundo N., Löhner, Rainald, Wüchner, Roland, Antil, Harbir

“…An adjoint-based procedure to determine weaknesses, or, more generally the material properties of structures is developed and tested. Given a series of force…”
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A vertex-centered finite volume method with interface sharpening technique for compressible two-phase flows by Li, Lingquan, Löhner, Rainald, Pandare, Aditya K., Luo, Hong

“…A robust and efficient finite volume method with interface sharpening technique has been developed to solve the six-equation multi-fluid single-pressure model…”
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A discontinuous Galerkin method based on a Taylor basis for the compressible flows on arbitrary grids by Luo, Hong, Baum, Joseph D., Löhner, Rainald

“…A discontinuous Galerkin method based on a Taylor basis is presented for the solution of the compressible Euler equations on arbitrary grids. Unlike the…”
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Explicit two‐step Runge‐Kutta methods for computational fluid dynamics solvers by Figueroa, Alejandro, Jackiewicz, Zdzisław, Löhner, Rainald

“…Summary Computational fluid dynamics (CFD) has emerged as a successful tool for industry applications and basic science during the last decades. However,…”
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