Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
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This Author published in this journals
All Journal Journal of Applied Engineering and Technological Science (JAETS)
Ayap Kurmanov
A. Baitursynuly Kostanay Regional University
Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Industrial & Manufacturing Engineering

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Prospects of Wind Turbines With Diffuser Augmented Configurations: Bibliographic and Patent Analysis Aydar Kurmanov; Bulat Salykov; Ayap Kurmanov; Uralbay Khassenov
Journal of Applied Engineering and Technological Science (JAETS) Vol. 7 No. 2 (2026): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/sjht2f79

Abstract

Diffuser-augmented wind turbines (DAWTs) are a promising wind-energy concept designed to enhance airflow through the rotor and improve energy capture, especially in low-wind and urban environments. This study evaluates the development prospects of DAWTs through an integrated bibliometric and patent analysis. Bibliographic records were retrieved from Scopus, and patent records were obtained from Google Patents for the period 2013–2023. After screening and eligibility assessment, 334 scientific publications and 401 patent families were included in the final analysis. The results show a sustained increase in research output, with China, the United States, and Japan emerging as leading contributors. Keyword co-occurrence analysis identified four dominant research clusters: aerodynamics and optimization, design and materials, urban and distributed systems, and noise and control. Patent activity peaked around 2020 and was concentrated in China, the United States, and Europe, indicating growing commercial interest. Although DAWTs can achieve rotor-area-normalized performance values above the classical Betz limit, such results should be interpreted within the specific fluid-dynamic framework of ducted systems. Overall, DAWTs demonstrate strong technical potential, but large-scale deployment remains constrained by structural complexity, cost, and limited field validation. Future progress depends on scalable design, field testing, and techno-economic assessment.
The Optimisation of Technological Parameters of Centrifugal Impact Crushers for Grain Grinding Natalya Kamysheva; Ayap Kurmanov; Vladimir Sapa; Serik Akhanov
Journal of Applied Engineering and Technological Science (JAETS) Vol. 7 No. 2 (2026): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/jaets.v7i2.10302

Abstract

This study aims to increase the energy efficiency and product uniformity of centrifugal impact crushers for feed grain processing through targeted optimisation of technological parameters. A direct-impact mechanism was implemented by profiling the stationary impact lining with an involute tooth geometry that ensures grain collisions at a 90° angle, minimising kinetic energy losses. Experimental tests were conducted on pea grain (moisture 11.6%) using a prototype crusher developed at Kostanay Regional University. Rotor speed was set at 2000 rpm, throughput maintained at 400 kg/h. The optimised crusher achieved a specific energy consumption of 2.89 kWh/t, which is 22% lower than a conventional impact crusher of similar capacity. The crushed product had an arithmetic mean particle size of 1.31 mm with 85% of particles within the 0.5-1.5 mm range, meeting zootechnical standards. Theoretically, this work refines comminution models by quantifying the effect of impact angle on breakage efficiency and provides a design criterion (involute profile with 47°-56° contact angles) for normal-impact crushers. Practically, the prototype offers a low-energy, high-uniformity solution suitable for feed mills and can be retrofitted into existing machines. The main contribution is the experimental validation that deliberate alignment of impact geometry reduces specific energy by over one-fifth without sacrificing throughput or quality, opening a new direction for energy-efficient grinder design.
Co-Authors Aydar Kurmanov Bulat Salykov Natalya Kamysheva Serik Akhanov Uralbay Khassenov Vladimir Sapa