Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Atmospheric turbulent flowsolutions coupled with a mesoscale weather prediction model
Date
2013-01-01
Author
Leblebici, Engin
Ahmet, Gökhan
Tuncer, İsmail Hakkı
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
223
views
0
downloads
Cite This
Atmospheric turbulent flow solutions coupled with a mesoscale meteorological weather prediction software are obtained on terrain fitted high resolution computational grids using FLUENT as a CFD tool. The terrain topology of interest, which may be obtained in various resolution levels, is accurately modeled using unstructured grids. The widely used meteorological weather prediction software WRF is used to provide unsteady boundary conditions for the CFD solution domain. Due to difference of mesh structure and resolution, the coupling procedure is challenging. As an addition to previous works, improvements over the coupling procedure are done by using modified boundary conditions to match the ground surfaces of both low resolution WRF data and FLUENT flowfield. Unsteady boundary conditions are implemented through the User Defined Functions developed for FLUENT. The main objectives of this study are to overcome the challenges of the coupling of the solvers and to obtain unsteady, turbulent atmospheric flow solutions accurately using low resolution atmospheric weather prediction models for spatially and time varying boundary conditions and high resolution Navier-Stokes solutions over topographical terrains.
Subject Keywords
Unsteady Navier-stokes solutions
,
Weather prediction software
,
Unstructured grids
,
Unsteady boundary condition coupling
URI
https://hdl.handle.net/11511/57617
DOI
https://doi.org/10.7712/seeccm-2013.2070
Conference Name
SEECCM II 3rd South-East European Conference on Computational Mechanicsan ECCOMAS and IACM Special Interest Conference
Collections
Department of Aerospace Engineering, Conference / Seminar
Suggestions
OpenMETU
Core
Terrain modeling and atmospheric turbulent flow solutions based on meteorological weather forecast data
Leblebici, Engin; Tuncer, İsmail Hakkı; Department of Aerospace Engineering (2012)
In this study, atmospheric and turbulent flow solutions are obtained using meteorological flowfield and topographical terrain data in high resolution. The terrain topology of interest, which may be obtained in various resolution levels, is accurately modeled using structured or unstructured grids depending on whether high-rise building models are present or not. Meteorological weather prediction software MM5, is used to provide accurate and unsteady boundary conditions for the solution domain. Unsteady turb...
Progress in space weather modeling in an operational environment
Tsagouri, Ioanna; Belehaki, Anna; Bergeot, Nicolas; Cid, Consuelo; Delouille, Veronique; Egorova, Tatiana; Jakowski, Norbert; Kutiev, Ivan; Mikhailov, Andrei; Nunez, Marlon; Pietrella, Marco; Potapov, Alexander; Qahwaji, Rami; Tulunay, Yurdanur; Velinov, Peter; Viljanen, Ari (2013-01-01)
This paper aims at providing an overview of latest advances in space weather modeling in an operational environment in Europe, including both the introduction of new models and improvements to existing codes and algorithms that address the broad range of space weather's prediction requirements from the Sun to the Earth. For each case, we consider the model's input data, the output parameters, products or services, its operational status, and whether it is supported by validation results, in order to build a...
Atmospheric Effects Removal for the Infrared Image Sequences
Ozsarac, Seckin; Akar, Gözde (2015-09-01)
Accurate correction of atmospheric effects on data captured by an infrared (IR) camera is crucial for several applications such as vegetation monitoring, temperature monitoring, satellite images, hyperspectral imaging, numerical model simulations, surface properties characterization, and IR measurement interpretation. Atmospheric effects depend on the temporal changes, i. e., year, season, day, hour, etc., and on the geometry between the camera and the measured scene, i. e., line of sight. The orientation a...
Atmospheric boundary layer simulation in a short wind tunnel
Shojaee, S. M. N.; Uzol, Oğuz; Kurç, Özgür (2014-02-01)
This paper presents the design, computational analysis and experimental study of passive device configurations which utilized in the Ankara Wind Tunnel to simulate the atmospheric boundary layer within the test section. The study here is part of a joint project between the Aerospace and Civil Engineering Departments at Middle East Technical University, which involves testing of high-rise building models in the Ankara Wind Tunnel. The design consists of spires and rows of cubical surface roughness elements a...
GPS-Based Real-Time Orbit Determination of Low Earth Orbit Satellites Using Robust Unscented Kalman Filter
Karslıoğlu, Mahmut Onur; Erdogan, Eren; Pamuk, Onur (2017-11-01)
In this research, a novel algorithm for real-time orbit determination (RTOD) is presented using the robust unscented Kalman filter (RUKF) with global positioning system (GPS) group and phase ionospheric correction (GRAPHIC) observables. To increase the reliability of the solution, a robust approach is included in the UKF to cope with the bad, invalid, or degraded measurements leading to the divergence or inaccurate output of the filter. Robustness is provided by making the filter less sensitive to faulty me...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
E. Leblebici, G. Ahmet, and İ. H. Tuncer, “Atmospheric turbulent flowsolutions coupled with a mesoscale weather prediction model,” presented at the SEECCM II 3rd South-East European Conference on Computational Mechanicsan ECCOMAS and IACM Special Interest Conference, Kos Island, Greece, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57617.