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OROGRAFİK (YERE-YAKIN) ALANLAR ÜZERİNDE ZAMANLA HIZLI DEĞİŞEN 3 BOYUTLU RÜZGAR GİRDAPLARI VE BUNLARIN UÇUŞ GÜVENLİĞİNE ETKİLERİ

THE SIMULATION OF TIME-DEPENDANT THREE DIMENSIONS (3D) WIND VORTEX WHICH COMES INTO BEING ON OROGRAPHY AREAS AND USING OF IT IN THE INCREASING FLIGHT SAFETY

Journal Name:

  • Havacılık ve Uzay Teknolojileri Dergisi

Publication Year:

  • 2009

Key Words:

Keywords (Original Language):

Author NameUniversity of Author
Abstract (2. Language): 
In this study, it is studied that the augmented Wind-FLOWER numerical modelling skill’s applications and land-surface (orographic) air flows’ numerical modelling on mountain areas by using real topography datas which are defined on geographic areas. This numerical modelling skill’s simulation results show that 3-D specifications are very important for being of time-dependant quick-change vortex which are included by landsurface air flows. In the numerical modelling skill’s applications topographical numerical altitude datas that include informations and datas of really “Numerical Altitude Model (NAM)” are used. These real topographic datas, used in application part, are examinated very tightly and seperated same size topographic datas before using as initial/beginning datas for Wind-FLOWER numerical modelling. Then, these topographical datas are used as land-surface data for modelling applications. This modelling applications include a pro-precessor and a post-processor. The pro-precessor runs land-surface numerical datas and uses them in numerical modelling applications. The post-processor constitutes 2-D and 3-D images by using the numerical modelling applications’ datas of land-surface air flow and determined vortex formations and vortex-density distrubitions. Furthermore, a “Graphical User Interface (GUI)” is constituted which is required to work with pre-processor and postprocessor and is practiced for easy usage of numerical modelling.
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Abstract (Original Language): 
Bu çalışmada Wind-FLOWER sayısal modelleme yeteneğinin uygulamaları ile coğrafi bölgelerde belirlenmiş, gerçek topoğrafya bilgileri kullanarak, dağlık alanlarda yere-yakın (orografik) hava akışlarının sayısal olarak modellemesi yapılmıştır. Sayısal modelleme yeteneğinin geliştirmiş olduğu benzetim sonuçları, yere-yakın hava akışlarının içerdiği, zamanla hızlı değişen girdap oluşumlarında 3 boyutlu özelliklerin önemini kesinlikle göstermektedir. Sayısal modelleme yeteneğinin uygulamalarında, gerçek “Sayısal Yükseklik Modeli (SYM)” bilgilerini içeren topoğrafik sayısal yükseklik verileri kullanılmış ve bu sayısal yükseklik verileri, Wind- FLOWER modelinin uygulamaları için gereken yer-yüzeyi verilerini oluşturmuştur. Modelin uygulaması kapsamında ön-işlemci (pre-processor) ve ard-işlemci (post-processor) yazılım derlemleri geliştirilmiştir. Önişlemci ve ard-işlemci yazılım derlemleri ile birlikte uygulanması gereken ve sayısal modelin kolaylıkla kullanılmasını sağlayan bir “Görüntüleme Kullanıcı Arayüzü (GKA)” [Graphical User Interface (GUI)] yazılım derlemi de oluşturulmuş ve uygulanmıştır.
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