Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt

ÖZDEMİR, Ahmet; Guldas, Abdulmecit; ULUER, Onuralp

Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt

Abdulmecit GÜLDAŞ, (Gazi Üniversitesi, Teknik Eğitim Fakültesi, Makine Eğitimi Bölümü, Ankara, Türkiye)

Onuralp ULUER, (Gazi Üniversitesi, Teknik Eğitim Fakültesi, Makine Eğitimi Bölümü, Ankara, Türkiye)

Ahmet ÖZDEMİR (Gazi Üniversitesi, Teknik Eğitim Fakültesi, Makine Eğitimi Bölümü, Ankara, Türkiye)

Gazi Üniversitesi Fen Bilimleri Dergisi

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Yıl: 2005 Cilt: 18 Sayı: 4 Sayfa Aralığı: 707 - 721 Metin Dili: Türkçe İndeks Tarihi: 29-07-2022

Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt

Öz:

Plastik enjeksiyon kalıplarında, kalıp boşluğu içerisinde ergimiş plastiklerin akışının matematiksel modellenmesi, akış burnu hareketlerinin tayini ve basınç, hız ve sıcaklık dağılımlarının belirlenmesi için kullanılan temel denklemler türetilmiştir. Literatürde farklı metotlarla türetilen fakat, çok anlaşılır olarak verilmeyen süreklilik, momentum ve enerji denklemleri daha detaylı bir şekilde elde edilmiş ve diferansiyel denklem çözüm metotlarının uygulandığı biçime getirilmiştir. Sonlu Kontrol Hacmi formülasyonu’na göre yapılan ayrıklaştırma işleminde Tam Implicit metodu ve Upwind metodu kullanılmıştır. Kalıp boşluğunun iki boyutlu olarak ele alındığı çalışmada, Phoenics programı ile yapılan çözümlemede, yoğunluğun değişimleri Boussinesq Yaklaşımı’na göre hesaplanmıştır. Plastiğin kalıp boşluğunu doldurması simüle edilmiştir. Ayrıca, Darc’y yöntemi kullanılarak katı katman tabakası tespit edilmiştir.

Anahtar Kelime:

Enjeksiyon kalıplarındaki akışın anlizi,ergimiş plastik akışının matematiksel modellenmesi için temel denklemlerin türetilmesi

Öz:

In the injection molds, the governing equations that describe the flow front of a polymer melt and form of the pressure, velocity and temperature distribution have been derived for the mathematical modeling. The continuity, the momentum and the energy equations derived from different methods in the literature were obtained in detail and they were prepared as a set on which the solving methods of differential equations can be applied. In discretization process using Finite Control Volume, Full Implicit and Upwind methods were used. For two dimensional cavity, variations of density were calculated using Boussinesq Approach by Phoneics program. Filling simulation in the cavity were achieved. In addition, solid layer was determined by Darc’y method.

Anahtar Kelime:

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	Guldas A, ULUER O, ÖZDEMİR A (2005). Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt. , 707 - 721.
Chicago	Guldas Abdulmecit,ULUER Onuralp,ÖZDEMİR Ahmet Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt. (2005): 707 - 721.
MLA	Guldas Abdulmecit,ULUER Onuralp,ÖZDEMİR Ahmet Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt. , 2005, ss.707 - 721.
AMA	Guldas A,ULUER O,ÖZDEMİR A Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt. . 2005; 707 - 721.
Vancouver	Guldas A,ULUER O,ÖZDEMİR A Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt. . 2005; 707 - 721.
IEEE	Guldas A,ULUER O,ÖZDEMİR A "Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt." , ss.707 - 721, 2005.
ISNAD	Guldas, Abdulmecit vd. "Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt". (2005), 707-721.

APA	Guldas A, ULUER O, ÖZDEMİR A (2005). Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt. Gazi Üniversitesi Fen Bilimleri Dergisi, 18(4), 707 - 721.
Chicago	Guldas Abdulmecit,ULUER Onuralp,ÖZDEMİR Ahmet Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt. Gazi Üniversitesi Fen Bilimleri Dergisi 18, no.4 (2005): 707 - 721.
MLA	Guldas Abdulmecit,ULUER Onuralp,ÖZDEMİR Ahmet Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt. Gazi Üniversitesi Fen Bilimleri Dergisi, vol.18, no.4, 2005, ss.707 - 721.
AMA	Guldas A,ULUER O,ÖZDEMİR A Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt. Gazi Üniversitesi Fen Bilimleri Dergisi. 2005; 18(4): 707 - 721.
Vancouver	Guldas A,ULUER O,ÖZDEMİR A Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt. Gazi Üniversitesi Fen Bilimleri Dergisi. 2005; 18(4): 707 - 721.
IEEE	Guldas A,ULUER O,ÖZDEMİR A "Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt." Gazi Üniversitesi Fen Bilimleri Dergisi, 18, ss.707 - 721, 2005.
ISNAD	Guldas, Abdulmecit vd. "Analysis of flow in injection molds,the derivation of the governing equations for the mathematical modelling of the flow of polymer melt". Gazi Üniversitesi Fen Bilimleri Dergisi 18/4 (2005), 707-721.