ABOUT THE SCIENTIFIC PROJECT:

• Project name:

  Experimental Investigation of Elastoviscoplastic Turbulent Flows in a Cylindrical Pipe

• The purpose of the project: This
  project aims to experimentally investigate turbulent flows of elastoviscoplastic fluids, specifically Carbopol solutions, within a cylindrical tube, emphasizing the rheological effects, turbulence characteristics, and the validity of scaling laws governing energy transfer mechanisms.

• Objectives:

Conducting experimental studies of the pipe flow, characterization of the rheological properties of Carbopol and influence of the Reynolds number. This task based on experiments using 0.1% and 0.15% Carbopol solutions in a transparent cylindrical tube. Main idea is to analyze the average velocity profiles at different Carbopol concentrations and Reynolds numbers. With the help of comprehensive experiments to find out how the rheological properties of Carbopol affect the characteristics of turbulent flow, with special emphasis on understanding the changes in Reynolds stresses caused by these solutions. This goal contributes to the establishment of a fundamental understanding of how the rheological properties of Carbopol interact with Reynolds numbers. Carrying out a spectral analysis of the power of velocity fluctuations. This task involves the use of advanced measurement methods, such as 3D PIV and LDA, to capture and analyze changes in velocity. Studying the power spectra of fluctuations, it is necessary to identify and understand the mechanisms of energy transfer from large to small scales in the turbulent flow of Carbopol solutions. This task is to determine whether the observed scaling corresponds to the proposed indicator -2/3 or whether the rheological properties of the Carbopol are undergoing
changes. This goal contributes to a detailed study of the spectral characteristics of velocity fluctuations, allowing us to get an idea of the unique features of energy distribution. Statistical analysis of velocity fluctuations. Conducting a comprehensive statistical analysis of velocity fluctuations in the turbulent flow of Carbopol solutions. Studying patterns and trends, it is required to identify the influence of Carbopol concentration and Reynolds number on the statistical distribution of velocity fluctuations. The task is to study various factors and their influence on the discontinuity of elastoviscoplastic fluids, characterized by the extreme events, such as localized areas with high flow velocity or high energy dissipation. Theoretical substantiation of the problem under study and numerical modeling. This task is aimed at developing a theoretical basis for understanding the transition from laminar to turbulent flow in elastoviscoplastic fluids. Main part is numerical modeling, complementing the experimental data, providing additional understanding of the turbulent behavior of Carbopol solutions. Particular attention will be paid to elucidating the observed asymmetry in the axial
velocity profiles during the turbulence transition. Combining theoretical and numerical approaches, this goal is aimed at providing a deep understanding of the complex dynamics associated with turbulent flows.

The idea of the project:

 In contemporary Kazakhstan, fundamental research in physics, chemistry, and mathematics encounters challenges in terms of its depth, quantity, and quality. Numerous projects either offer superficial solutions or solely validate success through practical outcomes, neglecting in-depth analysis. This scenario hampers the effective training of students and necessitates substantial investments in scientific development. This project is a fundamental study in the field of fluid mechanics aimed at understanding the intricate dynamics of elastoviscoplastic fluids within a cylindrical tube. For that the usage of Carbopol solutions selected to find out the impact of fluid rheology on turbulence characteristics, emphasizing energy transfer mechanisms and the validity of scaling laws. Through a comprehensive approach encompassing
experimental investigations, theoretical modeling, and numerical simulations, the research seeks to establish a profound and comprehensive understanding of the complex dynamics associated with turbulent flows of elastoviscoplastic fluids inside a cylindrical pipe. This research project seeks to delve into the intricate dynamics of elastoviscoplastic fluids, specifically 0.1% and 0.15% Carbopol solutions, within a transparent cylindrical tube. By conducting experimental studies, spectral and statistical analyses, and theoretical modeling, the project aims to unravel the rheological effects of Carbopol solutions on turbulence characteristics. The primary focus is on understanding energy transfer mechanisms, scaling laws’ validity, and the broader implications for turbulent flows. The main goal of this project is an experimental study of turbulent flows of elastoviscoplastic fluids (EVP), in particular 0.1% and 0.15% Carbopol solutions, inside a transparent cylindrical tube. The project’s outcomes are poised to significantly impact scientific and technical potential. The innovative methodologies and theoretical frameworks developed will contribute to the overall knowledge base in fluid dynamics. This, in turn, enhances the competitiveness of scientific organizations and research teams, fostering a more robust scientific community. The project’s influence extends to personnel, empowering scientists with advanced insights into elastoviscoplastic fluid behavior. Moreover, the practical significance of the research results holds substantial value. The project anticipates generating knowledge that is not only scientifically enriching but also readily applicable in various industries. The novel methodologies, validated through experimental and theoretical approaches, pave the way for improved technologies with potential commercialization. The degree of readiness for application underscores the project’s relevance in addressing urgent socio-economic challenges and contributing to the scientific and technical development of
Kazakhstan.

• Expected results:

The anticipated outcomes of the research include: 

1) Publication at least 1 (one) article and/or review in a peer-reviewed scientific journal indexed in the Science Citation Index Expanded, falling within the first quartile by impact factor in the Web of Science database and/or having a CiteScore percentile in Scopus of no less than 90. The possibility of publishing the research results in the following or similar journals is under consideration: Scopus/Web of Science: “Journal of Fluid Mechanics” (Percentile: 79-92%, Quartile: Q1), “Physics of Fluids”(Percentile: 78-87%, Quartile: Q1), “Annual Review of Fluid Mechanics” (Percentile: 99%, Quartile: Q1), “Experiments in Fluids” (Percentile: 70-84%, Quartile: Q1), “Journal of Rheology” (Percentile: 75-84%, Quartile: Q1-Q2). 

2) In order to promote scientific knowledge, disseminate information  regarding the outcomes, and enhance the prospects of implementation and commercialization, a dedicated webpage will be established on the organization’s site. Additionally, the research findings will be showcased at relevant conferences. 

3) The developed results will be made available to individuals and entities with an interest in the outcomes of the project, fostering accessibility and knowledge dissemination without restrictions through patents. 

4) The project will involve the comprehensive development of scientific and technical design documentation, providing a detailed framework for the experimental studies, theoretical modeling, and numerical  simulations. This documentation will serve as a crucial reference, encompassing the methodologies, protocols, and parameters essential for the project’s objectives. It aims to streamline the research process, ensure methodological consistency, and facilitate effective communication of the project’s findings to a broader audience. The documentation will be a cornerstone for both internal project management and potential external collaborations, contributing to the overall success and impact of the research endeavor. 

5) The dissemination of project results will be a multifaceted effort, targeting various audiences to maximize impact. Specifically, the findings will be shared among potential users, the scientific community, and the general public through several channels. This includes the creation of a dedicated project webpage on the organization’s site, serving as an accessible platform for sharing detailed information, updates, and relevant resources. Additionally, the results will be actively presented at conferences, engaging with the scientific community to foster discussions, gather feedback, and contribute to the broader scientific discourse. The project team will also explore opportunities to publish findings in reputable scientific journals, ensuring that the work is accessible to researchers and practitioners in the field.
Furthermore, efforts will be made to communicate key insights in a manner suitable for the general public, potentially through press releases, popular science articles, or public talks. This approach aims to enhance public awareness, promote understanding, and showcase the societal relevance of the project’s outcomes. Through these concerted dissemination strategies, the project intends to reach and benefit a diverse range of stakeholders. 

6) The project envisions several measurable outcomes aligned with the tender requirements and project specifics. Firstly, the development of innovative methodologies and theoretical frameworks will benefit researchers, educators, and practitioners in fluid dynamics and related fields, fostering advancements in scientific knowledge and technological applications. Secondly, the project aims to influence the development of the main scientific direction by contributing new insights into the behavior of elastoviscoplastic fluids, with potential applications in industries such as energy, medicine, and manufacturing. The obtained scientific results hold promise for
commercialization, particularly in industries dealing with complex fluid systems. The novel methodologies and experimental findings may lead to the development of improved technologies and processes, enhancing efficiency and sustainability. From a socio-economic standpoint, the project’s outcomes are expected to have a positive impact by addressing challenges in fluid dynamics, potentially leading to more efficient and environmentally friendly processes. This could be especially relevant in regions of the country facing specific fluid-related issues. Overall, the project aims to generate a range of direct and indirect results, including enhanced scientific knowledge, potential technological innovations, and positive socio-economic and environmental effects. These outcomes are anticipated to contribute to regional
problem-solving and the broader advancement of scientific and technical fields.