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Number of results: 5
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Abstract

On power generation and the future of Polish offshore wind farms.
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Authors and Affiliations

Paweł Flaszyński
1
Karol Mitraszewski
2
Joanna Markowska Cerić
2

  1. PAS Institute of Fluid-Flow Machinery, Gdańsk, Poland
  2. PGE Baltica sp. z o.o., Warsaw, Poland
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Abstract

The experimental pharmacologist Prof. Stanisław Jerzy Czuczwar, Vice President of the Polish Academy of Sciences, tells us about how he got into medical research, about the search for new epilepsy treatments, and how pharmaceuticals are in a way akin to cell phone towers.

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Authors and Affiliations

Stanisław Jerzy Czuczwar
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Abstract

Energy dissipator functions to dissipate the river-flow energy to avoid longitudinal damage to the downstream river morphology. An optimal energy dissipator planning is essential to fulfilling safe specifications regarding flow behavior. This study aims to determine the variation of energy dissipators and evaluate its effect on the hydraulic jump and energy dissipation. For this purpose, a physical model was carried out on the existing weir condition (two steps). It was also carried out on four stepped-weir variations, i.e., three-step, three-step with additional baffle blocks at the end sills, four-step, and six-step. Dimensional analysis was employed to correlate the different parameters that affect the studied phenomenon. The study shows a three-step jump shows a significantly higher Lj/y1 ratio, which is an advantage to hydraulic jumps’ compaction. The comparison of energy dissipation in all weir variations shows that the three-stepped weir has wasted more energy than other types. The energy dissipation increase of the three-step type is 20.41% higher than the existing type’s energy dissipation and much higher than other types. The dimensions of the energy dissipation basin are the ratio of the width and height of the stairs (l/h) of the three-step type (2.50). Therefore, this type is more optimal to reduce the cavitation risk, which damages the river structure and downstream area.
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Bibliography

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Authors and Affiliations

Azmeri Azmeri
1
ORCID: ORCID
Hairul Basri
2
ORCID: ORCID
Alfiansyah Yulianur
1
ORCID: ORCID
Ziana Ziana
1
ORCID: ORCID
Faris Zahran Jemi
3
ORCID: ORCID
Ridha Aulia Rahmah
1

  1. Syiah Kuala University, Faculty of Engineering, Civil Engineering Department, Jl. Tgk. Syeh Abdul Rauf No. 7, Darussalam – Banda Aceh 23111, Indonesia
  2. Syiah Kuala University, Faculty of Agriculture, Department of Soil Science, Banda Aceh, Indonesia
  3. Syiah Kuala University, Faculty of Engineering, Department of Electrical Engineering, Banda Aceh, Indonesia
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Abstract

Czyli o energetyce i przyszłości polskich farm wiatrowych na morzu.
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Authors and Affiliations

Paweł Flaszyński
Karol Mitraszewski
Joanna Markowska Cerić
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Abstract

The Bulletin of the Polish Academy of Sciences: Technical Sciences (Bull.Pol. Ac.: Tech.) is published bimonthly by the Division IV Engineering Sciences of the Polish Academy of Sciences, since the beginning of the existence of the PAS in 1952. The journal is peer‐reviewed and is published both in printed and electronic form. It is established for the publication of original high quality papers from multidisciplinary Engineering sciences with the following topics preferred: Artificial and Computational Intelligence, Biomedical Engineering and Biotechnology, Civil Engineering, Control, Informatics and Robotics, Electronics, Telecommunication and Optoelectronics, Mechanical and Aeronautical Engineering, Thermodynamics, Material Science and Nanotechnology, Power Systems and Power Electronics.

Journal Metrics: JCR Impact Factor 2018: 1.361, 5 Year Impact Factor: 1.323, SCImago Journal Rank (SJR) 2017: 0.319, Source Normalized Impact per Paper (SNIP) 2017: 1.005, CiteScore 2017: 1.27, The Polish Ministry of Science and Higher Education 2017: 25 points.

Abbreviations/Acronym: Journal citation: Bull. Pol. Ac.: Tech., ISO: Bull. Pol. Acad. Sci.-Tech. Sci., JCR Abbrev: B POL ACAD SCI-TECH Acronym in the Editorial System: BPASTS.

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Authors and Affiliations

Stanisław Jerzy Czuczwar

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