New Designed Main Nozzle of Air-Jet Weaving Machine for Optimizing Air Consumption using CFD Simulation

Shandilya, Anuj; Gangopadhyay, Suranjana

doi:10.37934/cfdl.14.9.108117

Cited by 4 publications

(4 citation statements)

References 11 publications

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“…This proven functionality opens up an opportunity to further investigate the dynamics of significantly more challenging high intensity and high shear flows (in particular potentially nonequilibrium flows) to properly test the well-known local equilibrium hypothesis for the structure of the small-scale turbulence. Finally, all the important findings provided from this study should be of direct relevance to turbulence theoreticians and computational fluid dynamist alike, e.g., involving the air-jet weaving machines [47], wind turbine [48][49], micro wind turbine [50], transonic compressor [51] and vortex generators [52].…”

Section: Discussionmentioning

confidence: 99%

A novel laser Doppler anemometer (LDA) for high-accuracy turbulence measurements

Yaacob

Schlander

Buchhave³

et al. 2022

ARASET

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High accuracy and dynamic range have been some of the most prominent challenges when it comes to fine-scale turbulence measurements. The current commercial LDA processors, which perform the signal processing of Doppler bursts directly using hardware components, are essentially black boxes and in particular are renown for suffering from practical limitations that reduce the measurement reliability and accuracy. A transparently functioning novel LDA, utilizing advanced technologies and up-to-date hardware and software has therefore been developed to enhance the measurement quality and the dynamic range. In addition, the self-developed software comes with a highly flexible functionality for the signal processing and data interpretation. The LDA setup and the combined forward/side scattering optical alignment (to minimize the effective measuring volume) are described first, followed by a description of the signal processing aspects. The round turbulent jet has been used as the test bed since it presents a wide range of degree of difficulty for the LDA processor (accuracy, dynamic range etc.) across the different radial distances and downstream development. The data are diagnosed for dynamic range in residence and interarrival times, and compared to a typical hardware driven processor. The radial profiles of measured mean streamwise velocity and variance agree well with previous studies of the round jet. The spatial turbulent kinetic energy spectra in the fully developed region perfectly match the expected (and in this region well established) -5/3 power law even for the largest measured distances from the centerline (where shear and turbulence intensity are significant).

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Section: Discussionmentioning

confidence: 99%

A novel laser Doppler anemometer (LDA) for high-accuracy turbulence measurements

Yaacob

Schlander

Buchhave³

et al. 2022

ARASET

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“…Shandilya ve Gangopadhyay'ın 2022 yılında yaptıkları çalışmada, ana enjektör hava akış kapasitesini iyileştirmek ve atkı enjeksiyon bölgesindeki geri akış olayını azaltmak için boğazlı yeni bir enjektör yapısı tasarlanmıştır. Yeni tasarımın, yaygın olarak kullanılan ana enjektörlere kıyasla aynı hava basıncında hızı artırdığı ve bunun da hava tüketimini azaltacağı ifade edilmiştir [12]. Zegan ve Ayele 2022 yılındaki çalışmalarında, hava jetli dokuma makinalarında dokumadan sonra optimum mekanik özelliklere ve iplik büküm kaybına sahip kumaş üretmek için hava basıncını ve tezgah hızını optimize etmeyi amaçlamışlardır.…”

Section: Literatür öZetiunclassified

“…Ana enjektörden çıkan iplik tarak kanalı (11) içerisinde harekete başlamaktadır. Atkı ağızlık içerisinde ilerlerken özel kanallı profil tarak üzerinde her 7.5 cm de bir ayarlanmış olan yardımcı nozzle (12) atkının ağızlık içerisinde sağlıklı bir şekilde ilerlemesini sağlamaktadır. Atkı, tarak kanalının sonuna vardığında germe enjektörü (15) ipliği gergin tutmaktadır.…”

Section: Introductionunclassified

Evaluation of Air Consumption in Air Jet Weaving Machines and Trials to Reduce

ZERVENT ÜNAL,

DEMİR

2023

Adıyaman Üniversitesi Mühendislik Bilimleri Dergisi

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Çalışma kapsamında, hava jetli atkı atma sistemine sahip dokuma tezgâhları ve bu tezgâhlardaki hava tüketiminin çeşitli açılardan ele alınarak değerlendirilmesi hedeflenmiştir. Bu amaçla öncelikle hava jetli ve rapierli dokuma makinaları üretim maliyetleri karşılaştırılmıştır. Ardından hava jetli dokuma tezgâhlarında hava sarfiyatına etki eden parametreler ortaya konulmaya çalışılmıştır. Atkı ipliği ve atkı varış süresinin hava sarfiyatı ile olan ilişkisi incelenmiş ve sarfiyatı azaltmaya yönelik öneriler geliştirilmiştir. Ayrıca teorik hava sarfiyatı hesaplama amaçlı kullanılabilecek bir Excel çalışma sayfası oluşturulmuştur.

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“…Not limited to HVAC system analysis, Ansys FLUENT also popular among various field of research. For example, Shandilya et al, [7] used Ansys Fluent to study the air flow and pressure of nozzle. Besides that, Tat et al, [8] managed to determine the correlation impact between the differential pressure to the leakage pipeline and the sound pressure level and turbulence kinetic energy.…”

Section: Introductionmentioning

confidence: 99%

Air Damper Effect on Temperature and Airflow Distribution in Enhancing Thermal Comfort Performance

Busu

Isa

Hariri

et al. 2022

ARFMTS

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Heating, ventilating, and air-conditioning (HVAC) technology keeps growing towards providing people with good thermal comfort and indoor air quality. Most buildings use a centralized air-conditioning system in which the air-handling configuration of variable air volume (VAV) system focuses on controlling the zone temperature. But, some of the areas in the zone facing under-actuated and over-actuated airflow lead to the distortion of thermal comfort. Some indoor areas get too cold, and some get too hot due to improper air distribution. The indoor temperature inconsistency will affect the occupants' productivity and work performance. The main focus of this research is to improve the indoor environment's thermal performance by implementing an active air damper as an air controlling device for a centralized air-conditioning system. Indirectly, this will provide the control of temperature for a specific area in the zone with a VAV system. This paper presents the simulation results on the effect of the air damper pattern and its opening parameter against the temperature and airflow distribution in enhancing the thermal comfort performance. The simulation was performed using Ansys FLUENT to analyze three types of air damper patterns: iris, butterfly and radial. The comparison of CFD simulation results shows that the iris damper pattern can provide an acceptable range of temperature of 22 ºC to 24 ºC, which is significant to the desired thermal comfort. The uniform airflow distribution across the indoor area is obtained with no back-flow form in the ducting. Besides, there is a substantial temperature increment when the opening area of inlet airflow is reduced. Therefore, it can be concluded that the iris damper pattern is the best selection for an active air damper since it can provide the best temperature and air flow distribution performance compared to the butterfly and radial air damper.

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New Designed Main Nozzle of Air-Jet Weaving Machine for Optimizing Air Consumption using CFD Simulation

Cited by 4 publications

References 11 publications

A novel laser Doppler anemometer (LDA) for high-accuracy turbulence measurements

A novel laser Doppler anemometer (LDA) for high-accuracy turbulence measurements

Evaluation of Air Consumption in Air Jet Weaving Machines and Trials to Reduce

Air Damper Effect on Temperature and Airflow Distribution in Enhancing Thermal Comfort Performance

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