Jarosław Błaszczak
dr inż.
- Remote Moodle user
- Profile fetched from Mechaniczny
- Affiliation at:
- I12
- ORCID ID:
- 0000-0002-5174-5104
Consultations
Recurring consultations
Day of week | Start | End | Semester | Place (building, room) | Description |
---|---|---|---|---|---|
Friday | 11:15 | 13:00 | 2023/24 L | B13, room 41 | Every Friday, Building B13: room 41 + You can send me an e-mail anytime /////// Każdy piątek, Budynek B13: pokój 41 + Możliwość kontaktu poprzez wysłanie e-maila w dowolnym czasie |
More about me
ResearcherID: B-1896-2013
https://scholar.google.com/citations?user=tjcSvEsAAAAJ&hl=en
Publications
2022
FABRIC AS AN ACOUSTIC BARRIER
Tests of fabrics with different weaves are presented.
2021
The Influence of Yarn and Weave Structures on Acoustic Materials and the Effect of Different Acoustic Signal Incidence Angles on Woven Fabric Absorption Possibilities
2019
Experimental Research of Noise Reduction Possibilities of an Axial Fan with an Additional Contra-Rotor
https://pdfs.semanticscholar.org/2310/423fa8be7d150edf003fc80162e3591ed9a4.pdf
This work refers to investigations of the noise propagation of a fan with an inlet contra-rotating rotor. The main goal was to find if there were regions of rotational frequency where the noise levels emitted by the system may be lower than expected. The measurements were performed at Lodz University of Technology in the aeroacoustic anechoic chamber. Constant rotational speed of the first rod-rotor was set-up as constant with varying rotational speed of the second rotor (the fan). The system was similar to one of the NASA earlier experiments. The analysis showed correlations between the emitted noise levels and the rotational speeds of the rotors. Next, the noise emitted only by the second rotor (the fan) was compared with the noise of two co-operating rotors. Some regions, where the noise of the fan was reduced due to the presence of the second contra-rotating rotor at the inlet, gave a base for future investigations. The issue is important especially in cases where quiet electric drives can be used and the aerodynamic noise is crucial. The presented results can be used in similar systems in modern flow machinery, aeroengines configurations, double-rotor drones, as well as, due to the simplicity of the system and its geometry, for verification of numerical methods.
2018
Influence of designs of weaves on acoustic attenuation of fabrics
2016
ACOUSTIC CHARACTERISTICS OF AN ANECHOIC CHAMBER WITH AN AXIAL TWO-STAGE LP MODEL TURBINE – COMPARATIVE STUDY
CMP/Turbomachinery; Vol. 149, pp. 1-10
Abstract: The main objective of this paper is to present experimental characteristics of an untypical aeroacoustic anechoic chamber especially built to investigate sounds accompanying flows in turbomachines. After having inserted an axial two-stage LP model turbine and after some years of exploitation the design parameters of the facility were checked again. The acoustic field inside the chamber was measured and its characteristics were compared with earlier results. All the experimental investigations were carried out in the Institute of Turbomachinery of the Lodz University of Technology, Poland.
Keywords: aeroacoustics, laboratory, anechoic chamber, characteristics
2016
EXPERIMENTAL TESTS OF POSSIBILITIES OF NOISE REDUCTION OF DRONES
CMP/TURBOMACHINERY; Vol.149; pp. 17-26
Authors: Robert C.J. HELIARA, Daniel RUPP, Pascal O.J. van VERSEVELD, Mathilde VINCE, Jaroslaw R. BLASZCZAK
Abstract: The paper presents the results of acoustic measurements concerning observation eight-propeller drone that, due to the load capacity, can also be used for transportation of large parcels. Due to its civil applications, mainly in large smart cities, the aim of this study is to look for opportunities to reduce emitted noise without significantly increasing its weight. The data were obtained during the measurement sessions in aeroacoustic anechoic chamber located at the Institute of Turbomachinery, Lodz University of Technology.
Key words: aeroacoustics, drone, noise reduction, measurements
2016
Experimental Investigations of Acoustic Characteristics of Two Counter–Rotating Rotors
2016
Aeroacoustic Measurements of Noise Generated by a Rotor for Selected Exploitation Conditions
Abstract: The paper presents measurements results of acoustic investigations of a helicopter rotor model. Its aim was to provide the data analysis allowing for identification of noise sources and propose solutions for noise reduction. The data were obtained during test sessions using a free-field measurement system. The researches were conducted inside an aeroacoustic anechoic chamber at the Institute of Turbomachinery, Lodz University of Technology.
Keywords: aeroacoustics, rotor, noise analysis, measurements
2023
Improving Smart Eco Cities According to Sustainable Development Proposed by the UN and EU Regulations
G Król, G Garcia, J Álvarez, T Melo, JR Blaszczak
International Faculty of Engineering,, Lodz University of Technology
The concept of Smart Eco Cities has gained significant attention in recent years, as nations worldwide strive to achieve sustainable development goals and enhance the quality of life for their citizens. This report delves into the multifaceted aspects of Smart Eco Cities (SEC), focusing on their alignment with the Agenda 2030, the measurement of smartness and sustainability, and the crucial decision of adapting existing cities versus building new ones. Furthermore, the report explores the potential of rebuilding Ukraine in line with SEC principles.
By examining various dimensions, including technology, infrastructure, and governance, the report provides general recommendations and guidelines for the development of these cities. It emphasizes the importance of comprehensive planning, stakeholder engagement, and the integration of innovative solutions to build resilient, inclusive, and environmentally-friendly cities. With the ultimate aim of improving the well-being of habitants and safeguarding the planet, this report serves as a valuable resource for policymakers, urban planners, and researchers invested in creating a sustainable and smart future for our cities.
- First access to site
- Monday, 18 August 2014, 3:27 PM (9 years 224 days)
- Last access to site
- Tuesday, 24 October 2023, 3:54 PM (155 days 20 hours)