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Journal ArticleDOI

Klassische Runge-Kutta-Formeln vierter und niedrigerer Ordnung mit Schrittweiten-Kontrolle und ihre Anwendung auf Wärmeleitungsprobleme

Erwin Fehlberg
- 01 Mar 1970 - 
- Vol. 6, Iss: 1, pp 61-71
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TLDR
These new formulas are suitable for the numerical integration of heat transfer problems after discretisation of these problems in the space variables, since stability considerations, occurring in such problems, would eliminate the benefits of high-orderRunge-Kutta formulas.
Abstract
Es werden neue, expliziteRunge-Kutta-Formeln vierter und niedrigerer Ordnung mitgeteilt. Diese Formeln enthalten eine Schrittweiten-Kontrolle, die auf einer vollstandigen Erfassung des ersten Gliedes des lokalen Abbruchfehlers basiert. Die Formeln haben wesentlich kleinere Abbruchfehler als entsprechende Formeln anderer Autoren. Diese neuen Formeln eignen sich zur numerischen Integration von in den Raumvariablen diskretisierten Warmeleitungsproblemen, da die bei solchen Problemen auftretenden Stabilitatsverhaltnisse die zulassige Schrittweite vonRunge-Kutta-Formeln hoherer Ordnung beeintrachtigen wurden. Die Formeln werden auf ein Beispiel fur ein Warmeleitungsproblem angewandt.

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Citations
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A versatile ray-tracing code for studying rf wave propagation in toroidal magnetized plasmas

TL;DR: In this article, a new ray-tracing code named C3PO has been developed to study the propagation of arbitrary electromagnetic radio-frequency (RF) waves in magnetized toroidal plasmas.
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Use of a windows program for simulation of the progress curves of reactants and intermediates involved in enzyme-catalyzed reactions.

TL;DR: A program that performs simulation of the kinetics of enzyme-catalyzed reactions with up to 32 species is described and the use of the program is illustrated with some examples.
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Flow and heat transfer of nanofluids over stretching sheet taking into account partial slip and thermal convective boundary conditions

TL;DR: In this paper, the effect of flow slip on the nanofluid boundary layer over a stretching surface is studied and the results show that an increase of thermophoresis parameter or slip factor would decrease the reduced Nusselt number in some cases.
Journal ArticleDOI

Representative Sinusoids for Hepatic Four-Scale Pharmacokinetics Simulations.

TL;DR: This article presents an integrated four-scale model, from single cells via sinusoids and the organ to the whole organism, capable of mechanistically representing metabolization inhomogeneity in livers at different spatial scales, and shows circulatory mixing effects due to a delayed recirculation through the surrounding organism.
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Helical Structure of the Cardiac Ventricular Anatomy Assessed by Diffusion Tensor Magnetic Resonance Imaging With Multiresolution Tractography

TL;DR: Objective analysis of myocardial architecture by an automated method, including the entire myocardium and using several 3-dimensional levels of complexity, reveals a continuous helicalMyocardial fiber arrangement of both right and left ventricles, supporting the anatomical model of the helical ventricular myocardian band described by F. Torrent-Guasp.
References
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Classical Fifth-, Sixth-, Seventh-, and Eighth-Order Runge-Kutta Formulas with Stepsize Control

TL;DR: Runge-Kutta formulas of high order with stepsize control through leading truncation error term through leading parallelogram error term.
Journal ArticleDOI

Klassische Runge-Kutta-Formeln fünfter und siebenter Ordnung mit Schrittweiten-Kontrolle

TL;DR: New explicit fifth- and seventh-orderRunge-Kutta formulas are derived that include a stepsize control procedure based on a complete coverage of the leading term of the local truncation error.
Journal ArticleDOI

Modern Computing Methods

Jr. James E. Kelley
- 01 Jul 1959 -