Engineering Applications of an Advanced Low-Order Panel Method

1985 ◽  
Author(s):  
C. E. Johnston ◽  
H. H. Youngren ◽  
J. S. Sikora
Keyword(s):  
Panel Method ◽  
Engineering Applications ◽  
Low Order

scholarly journals A Wake Model for the Prediction of Propeller Performance at Low Advance Ratios

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Ye Tian ◽  
Spyros A. Kinnas
Keyword(s):  
Experimental Data ◽  
Panel Method ◽  
Model Based ◽  
Pressure Distributions ◽  
Alignment Model ◽  
Wake Model ◽  
Propeller Performance ◽  
Wake Alignment ◽  
Low Order

A low order panel method is used to predict the performance of propellers. A wake alignment model based on a pseudounsteady scheme is proposed and implemented. The results from this full wake alignment (FWA) model are correlated with available experimental data, and results from RANS for some propellers at design and low advance ratios. Significant improvements have been found in the predicted integrated forces and pressure distributions.

Prediction of tip vortex cavitation inception with low-order panel method

2016 ◽  
Vol 125 ◽  
pp. 124-133 ◽  
Author(s):  
Youjiang Wang ◽  
Moustafa Abdel-Maksoud ◽  
Keqi Wang ◽  
Baowei Song
Keyword(s):  
Panel Method ◽  
Tip Vortex ◽  
Tip Vortex Cavitation ◽  
Cavitation Inception ◽  
Low Order

Added mass coefficients for submerged bodies by a low-order panel method

1993 ◽  
Author(s):  
ISKENDER SAHIN ◽  
JAN CRANE ◽  
KENNARD WATSON
Keyword(s):  
Added Mass ◽  
Panel Method ◽  
Low Order

Flow around circular and noncircular cylinders by a low-order panel method

1998 ◽  
Vol 25 (7) ◽  
pp. 529-539
Author(s):  
Iskender Sahin ◽  
Noriaki Okita
Keyword(s):  
Panel Method ◽  
Low Order

Impulsive flow around cylinders by a low-order panel method

1995 ◽  
Author(s):  
Iskender Sahin ◽  
Noriaki Okita
Keyword(s):  
Panel Method ◽  
Low Order

Boundary-Element Methods In Offshore Structure Analysis

2002 ◽  
Vol 124 (2) ◽  
pp. 81-89 ◽  
Author(s):  
J. N. Newman ◽  
C.-H. Lee
Keyword(s):  
Boundary Element ◽  
Velocity Potential ◽  
Practical Importance ◽  
Panel Method ◽  
Boundary Element Methods ◽  
Computational Time ◽  
Order Method ◽  
Offshore Structure ◽  
B Splines ◽  
Low Order

Boundary-element methods, also known as panel methods, have been widely used for computations of wave loads and other hydrodynamic characteristics associated with the interactions of offshore structures with waves. In the conventional approach, based on the low-order panel method, the submerged surface of the structure is represented by a large number of small quadrilateral plane elements, and the solution for the velocity potential or source strength is approximated by a constant value on each element. In this paper, we describe two recent developments of the panel method. One is a higher-order method where the submerged surface can be represented exactly, or approximated to a high degree of accuracy by B-splines, and the velocity potential is also approximated by B-splines. This technique, which was first used in the research code HIPAN, has now been extended and implemented in WAMIT. In many cases of practical importance, it is now possible to represent the geometry exactly to avoid the extra work required previously to develop panel input files for each structure. It is also possible to combine the same or different structures which are represented in this manner, to analyze multiple-body hydrodynamic interactions. Also described is the pre-corrected Fast Fourier Transform method (pFFT) which can reduce the computational time and required memory of the low-order method by an order of magnitude. In addition to descriptions of the two methods, several different applications are presented.

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