Author
Ralph W. Noack
Other affiliations:Â University of Alabama at Birmingham, University of Alabama, University of Birmingham
Bio: Ralph W. Noack is an academic researcher from Pennsylvania State University. The author has contributed to research in topics: Solver & Grid. The author has an hindex of 14, co-authored 31 publications receiving 1046 citations. Previous affiliations of Ralph W. Noack include University of Alabama at Birmingham & University of Alabama.
Topics:Â Solver, Grid, Interpolation, Euler equations, Finite volume method
Papers
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TL;DR: In this article, the problem of surface ships free to pitch and heave in regular head waves is analyzed numerically with an unsteady Reynolds averaged Navier Stokes (URANS) approach.
265Â citations
06 Jun 2005
195Â citations
01 Jan 2009
135Â citations
06 Jun 2005
TL;DR: The Donor interpolation Receptor Transaction library (DiRTlib) is a solver neutral library that simplifies the addition of an overset capability to a flow solver by encapsulating the required operations.
Abstract: The modifications to a flow solver to add an overset capability can be an impediment to developers wishing such a capability. The Donor interpolation Receptor Transaction library (DiRTlib) is a solver neutral library that simplifies the addition of an overset capability to a flow solver by encapsulating the required operations. This paper discusses the design issues of such a general capability and details the use of DiRTlib in a solver.
103Â citations
TL;DR: The code CFDShip-Iowa version 4 and the overset assembly code Suggar were modified to carry out some large scale simulations of free surface ship hydrodynamics, focused on reducing the memory requirement and optimizing the per-processor and parallel performance at the implementation and algorithmic levels.
75Â citations
Cited by
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TL;DR: A conceptual model of how the Digital Twin can be used for predicting the life of aircraft structure and assuring its structural integrity is presented and the technical challenges to developing and deploying a Digital Twin are discussed.
Abstract: Reengineering of the aircraft structural life prediction process to fully exploit advances in very high performance digital computing is proposed. The proposed process utilizes an ultrahigh fidelity model of individual aircraft by tail number, a Digital Twin, to integrate computation of structural deflections and temperatures in response to flight conditions, with resulting local damage and material state evolution. A conceptual model of how the Digital Twin can be used for predicting the life of aircraft structure and assuring its structural integrity is presented. The technical challenges to developing and deploying a Digital Twin are discussed in detail.
681Â citations
TL;DR: In this paper, the authors performed a fully nonlinear unsteady RANS simulation to predict the ship motions and added resistance of a full scale KRISO container ship model, and to estimate the increase in effective power and fuel consumption due to its operation in waves.
287Â citations
TL;DR: In this article, the problem of surface ships free to pitch and heave in regular head waves is analyzed numerically with an unsteady Reynolds averaged Navier Stokes (URANS) approach.
265Â citations
01 Jan 2002
TL;DR: In this paper, the grid generation for overset grids on complex geometry can be divided into four main steps: geometry processing, surface grid generation, volume grid generation and domain connectivity.
Abstract: Grid generation for overset grids on complex geometry can be divided into four main steps: geometry processing, surface grid generation, volume grid generation and domain connectivity. For each of these steps, the procedures currently practiced by experienced users are described. Typical problems encountered are also highlighted and discussed. Most of the guidelines are derived from experience on a variety of problems including space launch and return vehicles, subsonic transports with propulsion and high lift devices, supersonic vehicles, rotorcraft vehicles, and turbomachinery.
217Â citations
06 Jun 2005
195Â citations