Comparative Estimation of QGDFoam Solver Accuracy for Inviscid Flow Around a Cone

Bondarev, A. E.; Kuvshinnikov, Artem E.

doi:10.1109/ispras.2018.00019

Cited by 9 publications

(14 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Let us analyze the application of the considered methods on the example of the alternative (solvers) described in the works [9,10]. As noted in [8], out of five solvers, two give the best results -rhoCentralFoam and pisoCentralFoam (rCF и pCF).…”

Section: Methodsmentioning

confidence: 99%

Visualizing Methods of Multi-criteria Alternatives for Pairwise Comparison Procedure

Zaharova

Korostelev

2020

CPT2020 the 8th International Scientific Conference on Computing in Physics and Technology Proceedings

View full text Add to dashboard Cite

The article deals with the problem of choosing a preferred alternative in a pairwise comparison procedure. The difficulties of applying this procedure in a case of using alternatives with a large number of criteria are noted. It is proposed to supplement the procedure of expert pairwise comparison with visualization tools of multi-criteria alternatives. The paper considers several visualization methods for multi-criteria alternatives for pairwise comparison procedures: histograms, two-dimensional graphs, three-dimensional surfaces, probability distribution diagrams, visualization based on modifications of radar and radial diagrams, as well as combined methods. It described an experimental study of the application of the considered method for the task of determining the preferred alternative by the example of choosing one of two OpenFoam solvers (rhoCentralFoam and pisaCentralFoam), with the help of which estimates of the accuracy of calculating the inviscid flow around a cone were obtained. Each solver is characterized by 288 criteria. It is shown that the use of some of the methods considered does not make it possible for the expert to make a choice. In this case, a good result was obtained using methods for constructing three-dimensional surfaces, probability distribution diagrams, as well as using the combined method based on modified radar diagrams. It is concluded that the rhoCentralFoam solver is more preferable if there are no additional criteria for ranking the criteria. The possibility of using the combined method in combination with the ranking procedure of criteria (or their groups) during decision-making is also noted.

show abstract

Section: Methodsmentioning

confidence: 99%

Visualizing Methods of Multi-criteria Alternatives for Pairwise Comparison Procedure

Zaharova

Korostelev

2020

CPT2020 the 8th International Scientific Conference on Computing in Physics and Technology Proceedings

View full text Add to dashboard Cite

show abstract

“…With the help of the developed software "AlternativesVisualizer", there was also an experiment conducted for real alternatives. We got estimations according to 144 criteria for norms L1 and L2 for the computational problem of evaluating the accuracy of the calculations of inviscid flow around a cone by means of several OpenFoam solvers (rhoCentralFoam, piso-CentralFoam, sonicFoam, rhoPimpleFoam, QGDFoam) [8,9]. After preliminary processing of the initial data according to norm L1, only 88 criteria were left (as for the rest of the criteria, the data were incomplete).…”

Section: Methodsmentioning

confidence: 99%

Visualization Algorithms for Multi-criteria Alternatives Filtering

Zakharova¹,

Korostelyov²,

Fedonin³

2019

View full text Add to dashboard Cite

The article considers a decision-making problem for multi-criteria problems characterized by a large number of criteria and alternatives. As one of stages in making decisions in such situations, it is proposed to use a filtering of alternatives based on their visual images. For these purposes, the paper describes main aspects of this approach, as well as a statement of the algorithms for constructing the corresponding visual images based on radar and radial diagrams. A description of data preparation for operation of visualization algorithms for multi-criteria alternatives with an aim of their filtering is given. The paper describes software "Al-ternativesVisualizer" that implements the proposed algorithms, as well as providing interaction with an expert for visual filtering of multi-criteria alternatives. Additionally, the capabilities of the developed software are described. They include filtering alternatives based on threshold values, as well as the possibility of conducting a series of experiments in order to obtain the union or the intersection of filtered sets of alternatives. An experimental study of the developed algorithms and approaches effectiveness based on a synthetic test and an experiment on visual filtering of real alternatives describing the accuracy of calculating the inviscid flow around a cone using several OpenFoam solvers (rhoCentralFoam, pisoCentral-Foam, sonicFoam, rhoPimpleFoam, QGDFoam) is presented. Each solver is characterized by 288 criteria, and with the help of the developed algorithms during visual filtering, the clear predominance of two solvers over the others is established.

show abstract

“…With the help of the developed software, there was also an experiment conducted for real alternatives. We got estimations according to 144 criteria for norms L1 and L2 for the computational problem of evaluating the accuracy of the calculations of inviscid flow around a cone by means of several OpenFoam solvers (rhoCentralFoam, pisoCentralFoam, sonicFoam, rhoPimpleFoam, QGDFoam) [6,7].…”

Section: Methodsmentioning

confidence: 99%

Mathematical Support and Software of Visual Filtering of Alternatives in Multi-criteria Decision Making Problems

Zakharova¹,

Zaharova

Коростелёв³

et al. 2019

GraphiCon'2019 Proceedings. Volume 2

View full text Add to dashboard Cite

The article deals with the problem of multi-criteria decision-making problems, which are characterized by a large number of options and alternatives. It is proposed to use visual filtering of graphic images describing the corresponding alternatives as one of the stages in decision-making in such tasks. The approaches and requirements for the construction of graphic images of alternatives are considered. Describes the steps and algorithms for constructing visual images of alternatives, based on the radial and pie charts, and include the normalization procedure. It describes software that implements the proposed algorithms, as well as providing interactive interaction with an expert for visual filtering of multi-criteria alternatives. Additionally, the capabilities of the developed software are described, which include filtering alternatives based on threshold values, as well as the possibility of conducting a series of experiments in order to obtain the union or intersection of filtered sets of alternatives. A synthetic test for filtering 201 alternatives is described, each of which is described by 15 criteria. As a result of a series of experiments, this choice set was reduced by about 28 times. A description is also given of an experiment on visual filtering of real alternatives that describe estimates of the accuracy of calculating inviscid flow around a cone using several OpenFoam solvers. Each solver is characterized by 288 criteria, and according to the results of visual filtering, the advantage in the accuracy of the calculations of two solvers over the others is clearly established.

show abstract

Comparative Estimation of QGDFoam Solver Accuracy for Inviscid Flow Around a Cone

Cited by 9 publications

References 10 publications

Visualizing Methods of Multi-criteria Alternatives for Pairwise Comparison Procedure

Visualizing Methods of Multi-criteria Alternatives for Pairwise Comparison Procedure

Visualization Algorithms for Multi-criteria Alternatives Filtering

Mathematical Support and Software of Visual Filtering of Alternatives in Multi-criteria Decision Making Problems

Contact Info

Product

Resources

About