- Prathamesh Sankhe
- Purdue University, USA
- Mechanical Engineering
- Dr. Carl Wassgren
- August 2019 - May 2021
The focus of the current investigation is to study the influence of particles’ shape
on segregation of bi-disperse mixture of particles in a rotating drum. The effects
of various particle parameters such as shape and size ratio are investigated. The
results show the shape of both coarse and fine particles influence mixing. For the
coarse particles, decreasing trend of extent of radial segregation as follows: sphere >
oblate > prolate > elongated-needle (experimental).
Technical Paper published in IEEE journal By Weihui Gu; Leung Tsang; Andreas Colliander; Simon Yueh In Association with NASA JPL
Abstract – The accuracy of the hybrid method is validated by showing that the computed solutions of three trees are in good agreement with those solved from FEKO. Next the hybrid method is used for Monte Carlo simulations of forest stands with up to 30 trees. The dependences of the solutions on tree heights and tree densities are illustrated. The results show that the full-wave based transmissivities are much larger than those obtained from the radiative transfer equation (RTE) model.
Abstract—This paper compares the theoretical and measured
antenna patterns of a slant 45-degree antenna on a rolled edge
ground plane. Advantages of using sampled nearfield currents in
combination with large element physical optics in determining the
reflected far fields will be described.
Abstract—Since its introduction 25 years ago, the probe-fed Uslot patch antenna has remained popular. Recently, Characteristic
Mode Analysis (CMA) revealed these devices are governed by
Coupled Mode Theory (CMT). Although this principle is
conceptually simple, achieving this understanding is only possible
through a systematic analysis using CMA. This paper uses the Uslot patch to illustrate a general process for analyzing electrically
small antennas using CMA with the software package FEKO.
Aman Samaiyar, Dong-Chan Son, Mohamed Elmansouri, and Dejan Filipovic
Abstract—An approach based on shared aperture antenna
array is researched for simultaneous transmit and receive (STAR)
applications. The proposed configuration is a 10×10 antenna array
of circularly-polarized (CP) elements with 50 elements, somewhat
sparsely distributed, dedicated for Tx while the remaining
elements dedicated for Rx. The high isolation is achieved between
Tx and Rx elements at the expense of higher sidelobe levels, which
is an inherent property of sparse antenna arrays. To demonstrate
the performance of the proposed STAR configuration, numerical
modelling is conducted using multilevel fast multipole method
(MLFMM) solver in Altair FEKO.
Gopinath Gampala and C.J. Reddy
Abstract—Traditional antenna optimization solves the
modified version of the original antenna design for each iteration.
Thus, the total time required to optimize a given antenna design is
highly dependent on the convergence criteria of the selected
algorithm and the time taken for each iteration. The use of
machine learning enables the antenna designer to generate trained
mathematical model that replicates the original antenna design
and then apply optimization on the trained model. Use of trained
model allows to run thousands of optimization iterations in a span
of a few seconds
Abstract— An open-source antenna pattern measurement
system comprised of software-defined radios (SDRs), standard
PVC tubing, and 3-D printer components measures the radiation
patterns of student-built prototype antennas. Position control is
realized using an Arduino microcontroller. Measured principal
plane gain patterns for two antenna prototypes are compared to
(FEKO) simulated results. The low-cost, open-source nature of the
measurement system is ideal for undergraduate-level investigation
of antenna theory and measurement
Aaron Brandewie and Robert Burkholder
Abstract—Objects in low earth orbit such as CubeSats and the
International Space Station (ISS) move with constant velocity
along a linear trajectory when viewed from a ground-based radar.
The small change in attitude of the object as it flies overhead
permits the generation of an inverse synthetic aperture radar
(ISAR) image. In this paper, Altair’s FEKO™ software is used to
model the monostatic radar scattering from the ISS as a function
of frequency and aspect angle. The computed data is used for
generating a simulated ISAR image from a ground-based radar.
The system design requirements for the radar are calculated from
the radar equation.
Marlize Schoeman, Renier Marchand, Johann van Tonder, Ulrich Jakobus, Andres Aguilar, Kitty Longtin, Martin Vogel, and Taha Alwajeeh “FEKO Simulation of Radar Scattering from Objects in Low Earth Orbit for ISAR Imaging”
Aaron Brandewie and Robert Burkholder
Abstract—This paper describes some of the latest features in
the commercial electromagnetic software Feko (including
WinProp). These include the modeling of non-ideal cable shield
connections, the parallel direct adaptive cross approximation
(ACA) solver, edge and wedge diffraction for the ray launching
geometrical optics (RL-GO) solver, and several new features
related to automotive radar.
Learn how Altair Inspire helps simulate for Additive Manufacturing in this authoritative handbook – Advanced Additive Manufacturing Handbook,
In these specific sections –
6.3.10. Topologic design with Altair software (page 129)
6.3.11. Topologic design with Altair software for EB-PBF (page 134)
6.3.12. Topologic design with Altair software for SLS (page 135)
Project website: www.inex-adam.eu