Numerical Investigation of Mixed Blade Structure in Radial Fans

Halil Kartal; Burak Kurşun; Korhan Ökten; Levent Uğur

Article Details

Numerical Investigation of Mixed Blade Structure in Radial Fans

Authors:

Halil Kartal | Burak Kurşun | Korhan Ökten | Levent Uğur

Publisher:

Duzce University

Main Topics:

Mühendislik

Journal:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.11 Issue 3, pp.1303-1317

Document Type:

Article

Publication Date:

7/2023

Document Language:

Turkish

Document ID (Org No.):

2001296369

pISSN:

2148-2446

Keywords:

Abstract:

 In this study, it is investigated how the Flow-Rotor Rotation Speed relationship changes by converting a backward propeller structure to a mixed blade structure. In addition, in this study, some dimensions of the propeller geometry were fixed and a parametric study was carried out on the remaining critical dimensions. For this purpose, the analysis methodology, which is similar to the literature studies, was used, in which similar results were obtained with the experimental data. In Computational Fluid Dynamics CFD analyses, geometric properties such as mesh structure and air inlet and outlet volumes were kept constant, so that the main factor affecting the analysis results was blade geometry. In CFD analyses, first of all, the analysis results in different mesh structures were compared to ensure that the analysis results were independent from the digital network structure, then the analysis results were verified by comparing the analysis results with the test results. In the study, the flow rate, pressure, torque, efficiency values of the backward blade structure and the mixed blade structure were compared, and then the specific effects of the two critical dimensions that distinguish the mixed blade geometry from the first geometry on flow, pressure, torque and efficiency were shared in this study. As it is known from the literature studies examined, backward blade structures are designed to achieve high efficiency, they can reach high flow rates at high rotational speeds compared to forward facing blade types. The findings obtained in this study show that; Thanks to the mixed blade type, it is possible to obtain a higher flow rate without changing the rotation speed.

 In this study, it is investigated how the Flow-Rotor Rotation Speed relationship changes by converting a backward propeller structure to a mixed blade structure. In addition, in this study, some dimensions of the propeller geometry were fixed and a parametric study was carried out on the remaining critical dimensions. For this purpose, the analysis methodology, which is similar to the literature studies, was used, in which similar results were obtained with the experimental data. In Computational Fluid Dynamics CFD analyses, geometric properties such as mesh structure and air inlet and outlet volumes were kept constant, so that the main factor affecting the analysis results was blade geometry. In CFD analyses, first of all, the analysis results in different mesh structures were compared to ensure that the analysis results were independent from the digital network structure, then the analysis results were verified by comparing the analysis results with the test results. In the study, the flow rate, pressure, torque, efficiency values of the backward blade structure and the mixed blade structure were compared, and then the specific effects of the two critical dimensions that distinguish the mixed blade geometry from the first geometry on flow, pressure, torque and efficiency were shared in this study. As it is known from the literature studies examined, backward blade structures are designed to achieve high efficiency, they can reach high flow rates at high rotational speeds compared to forward facing blade types. The findings obtained in this study show that; Thanks to the mixed blade type, it is possible to obtain a higher flow rate without changing the rotation speed.

 In this study, it is investigated how the Flow-Rotor Rotation Speed relationship changes by converting a backward propeller structure to a mixed blade structure. In addition, in this study, some dimensions of the propeller geometry were fixed and a parametric study was carried out on the remaining critical dimensions. For this purpose, the analysis methodology, which is similar to the literature studies, was used, in which similar results were obtained with the experimental data. In Computational Fluid Dynamics CFD analyses, geometric properties such as mesh structure and air inlet and outlet volumes were kept constant, so that the main factor affecting the analysis results was blade geometry. In CFD analyses, first of all, the analysis results in different mesh structures were compared to ensure that the analysis results were independent from the digital network structure, then the analysis results were verified by comparing the analysis results with the test results. In the study, the flow rate, pressure, torque, efficiency values of the backward blade structure and the mixed blade structure were compared, and then the specific effects of the two critical dimensions that distinguish the mixed blade geometry from the first geometry on flow, pressure, torque and efficiency were shared in this study. As it is known from the literature studies examined, backward blade structures are designed to achieve high efficiency, they can reach high flow rates at high rotational speeds compared to forward facing blade types. The findings obtained in this study show that; Thanks to the mixed blade type, it is possible to obtain a higher flow rate without changing the rotation speed.

 Bu çalışmada, geriye dönük bir pervane yapısını karma kanat yapısına dönüştürerek debi-rotor, dönüş hızı ilişkisinin değişimi incelenmiştir. Ayrıca bu çalışmada pervane geometrisinin bir kısım ölçüleri sabitlenerek, geriye kalan kritik ölçüler üzerinde parametrik çalışma gerçekleştirilmiştir. Bunun için deneysel veriler ile benzer sonuçların elde edildiği, literatür çalışmaları ile benzer olan analiz metodolojisi kullanılmıştır. Hesaplamalı Akışkanlar Dinamiği HAD analizlerinde, mesh yapısı ve hava giriş ve çıkış hacimleri gibi geometrik özellikler sabit tutularak, analiz sonuçlarına etkiyen ana faktörün kanat geometrisi olması sağlanmıştır. HAD analizlerinde öncelikli olarak farklı mesh yapılarındaki analiz sonuçları karşılaştırılarak analiz sonuçlarının mesh yapısından bağımsız olması sağlanmıştır, sonrasında analiz sonuçları ile deney sonuçları karşılaştırılarak analiz sonuçları doğrulanmıştır. Yapılan çalışmada geriye dönük kanat yapısının ve karma kanat yapısının debi, basınç, tork, verim değerleri karşılaştırılmış sonrasında karma kanat geometrisini ilk geometriden ayıran iki kritik ölçünün debi, basınç, tork ve verim üzerine spesifik etkileri bu çalışma içerisinde paylaşılmıştır. İncelenen literatür çalışmalarından bilindiği üzere geriye dönük kanat yapıları yüksek verimlilik elde etmek amacı ile tasarlanmaktadır, ileri dönük kanat tiplerine kıyasla yüksek debilere yüksek devir hızlarında ulaşabilmektedir. Bu çalışmada elde edilen bulgular göstermektedir ki; karma kanat tipi sayesinde devir hızını değiştirmeden daha yüksek bir debi elde edilebilmesi mümkün olabilmektedir.

Article Details

Numerical Investigation of Mixed Blade Structure in Radial Fans

Authors:

Halil Kartal | Burak Kurşun | Korhan Ökten | Levent Uğur

Publisher:

Duzce University

Main Topics:

Mühendislik

Journal:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.11 Issue 3, pp.1303-1317

Document Type:

Article

Publication Date:

7/2023

Document Language:

Turkish

Document ID (Org No.):

2001296369

pISSN:

2148-2446

Backward Curved Radial Blade

Forward-Facing Radial Blade

Mixed Type Radial Blade

Computable Fluid Dynamics (CFD)

Radial Blade PerformanceGeriye Eğik Radyal Kanat

İleri Dönük Radyal Kanat

Karma Tip Radyal Kanat

Hesaplanabilir Akışkanlar Dinamiği (HAD)

Radyal Kanat Performans

Issues

Article Details

Authors: Halil Kartal | Burak Kurşun | Korhan Ökten | Levent Uğur

Publisher: Duzce University

Main Topics: Mühendislik

Journal: Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.11 Issue 3, pp.1303-1317

Document Type: Article

Publication Date: 7/2023

Document Language: Turkish

Document ID (Org No.): 2001296369

pISSN: 2148-2446

Issues

Authors:

Halil Kartal | Burak Kurşun | Korhan Ökten | Levent Uğur

Publisher:

Duzce University

Main Topics:

Mühendislik

Journal:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.11 Issue 3, pp.1303-1317

Document Type:

Article

Publication Date:

7/2023

Document Language:

Turkish

Document ID (Org No.):

2001296369

pISSN:

2148-2446