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On Boundary Layer Flow and Heat Transfer to Burgers Fluid

Thesis Info

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Author

Khan, Waqar Azeem

Supervisor

Masood Khan

Program

PhD

Institute

Quaid-I-Azam University

City

Islamabad

Province

Islamabad.

Country

Pakistan

Thesis Completing Year

2017

Thesis Completion Status

Completed

Subject

Mathemaics

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/8209/1/Waqar%20Azeem%20Complete%20%20Final%20Thesis.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726793338

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The aim of this thesis is to furnish some theoretical results in the field of non-Newtonian fluid mechanics. The research presented in the thesis is concerned with the mathematical modeling and development of analytical solutions for non-Newtonian fluids. Particularly, this thesis focuses on the boundary layer flows of Burgers and generalized Burgers fluids induced by the stretching surface. Thus the theme of thesis is twofold. First, the development of the boundary layer equations for steady two- and three-dimensional flows of Burgers and generalized Burgers fluids. Second, to give a better understanding of their behaviors, the development of the analytical results for them in diverse circumstances. The problems considered here involve, the forced convective heat transfer over linear stretching surfaces by assuming different situations like nanofluid, Cattaneo-Christov heat and mass flux models, homogeneous-heterogeneous and melting processes. The modeled PDEs are transformed into ODEs by utilizing suitable transformations which are then solved by employing HAM. In the limiting cases, our solutions are in excellent agreement with previously reported results in the literature. To assess and demonstrate the physical aspects of our results, some of the velocity, 17 temperature and concentration profiles are presented graphically for emerging parameters and discussed in detail. Moreover, the local Nusselt and Sherwood numbers are presented in tabular form for a set of values of the non-dimensional parameters. A profound observation is that the velocity and associated momentum boundary layer thickness diminish with augmented values of the materials parameter ?2 of Burgers fluid; however, quite the opposite is true in case of the material parameter ?4 of generalized Burgers fluids. In addition, it is noticed that temperature and concentration profiles enhance as the material parameter ?2 is incremented. It is further observed that the temperature and concentration distribution possess a reverse behavior for the material parameter ?4 when compared with ?2. Indeed this thesis leads us to suggest that the results owing from the Burgers and generalized Burgers models do provide a much improved understanding of their rheological characteristics.
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نعت

نعت

تجمل حسین تجمل قادری

وادیءِ سرورِ ﷺلَولاک میں گُم ہو جاؤں
مَیں مدینے کی حسِیں خاک میں گُم ہو جاؤں
کاش سرکار ﷺکے نعلَین کا ذرّہ ہوکر
مُسکراتے ہوئے اَفلاک میں گُم ہو جاؤں
اے خدا اِتنا بڑھا دے تُو مِرا رزقِ سُخَن
راحتِ قَلب کی خوراک میں گُم ہو جاؤں
حرف مِدحَت کے اُترتے ہیں مِرے سِینے میں
جب کبھی دیدہءِ نَمناک میں گُم ہو جاؤں
آج ہوجائے عطا مقطعِ انوار کوئی
آج پھر مطلعِ اِدراک میں گُم ہو جاؤں
اِس قدر تُونے تراشے ہیں خدوخالِ حیات
دِل یہ کرتا ہے تِرے چاک میں گُم ہو جاؤں
جب تلک وَصل کی راحت نہ میسّر آئے
کیوں نہ پھر ہِجر کی پوشاک میں گُم ہو جاؤں
اَب تو بَس ایک ہی خواہش ہے تجّمُل میری
مدحتِ پَنجتنِ پاک میں گُم ہو جاؤں

NEED ANALYSIS ON ASSESSMENT BASED E-LEARNING PLATFORM IN READING CLASS FOR VOCATIONAL STUDENTS AT EAST LAMPUNG

Assessment and the learning process become two intertwined concepts that are impossible to separate. When compared to the other three abilities, reading skills are the most important in English learning. In order to meet the demands of modern teaching development, information and communication technology is required for English language instruction and assessment. The purpose of this study is to examine the requirements of both learners and pursuers in terms of the use of information and communication technology in reading instruction assessment (Reading Assessment). This current study used two data collection technique, namely questionnaires and interviews analyzed quantitatively and qualitatively. Respondents in this study were selected by purposive sampling involving 70 students and 5 teachers in vocational schools. The results of this study found that (1) The students’ goal and necessities differ, (2) The students are at beginner level at reading skill and have reading word and sentences fluently and correctly, (3) They want familiar contents based on their life, environment and major, (4) The need of information and communication technology both for learning and assessing and (5) Through the product, the English learners would be learning, collaborative and independent. The researcher advised for further researcher to conduct the development the information and communication technology for teaching and assessing English learners in vocational schools.

پاکستانی اردوافسانےکی تنقید کا ارتقا

In the early decades of 20th century, Urdu Literature was awarded by a contemporary genre called Afsana which is a notorious and noted genre of Urdu Literature and the literary criticism upon Urdu Afsana is existed for as long as Urdu Afsana itself. Through this study '' The Evolution of Literary Criticism Upon Pakistani Urdu Afsana: Analytical Study '' analyzes and evaluates the salient features of literary critical writings upon Pakistani Urdu Afsana, which is expanded all most of the century. The criticism upon Urdu Afsana started its work not so efficiently. In the early decades of twentieth century, there were some critical essays and prefaces and nothing to flip through the pages. The progressive movement in Urdu Afsana showed commitment to the Marxist Philosophy in their writings, before the creation of Pakistan brought some novelty in the subjects, techniques and subject material equally to its literary criticism. Most of the contemporary writers dealt with the the theme of'' Realism " in 1947 to 1960.Therefore the criticism upon Urdu Afsana before partition of the subcontinent should be under consideration due to its acute importance. Before 1947, criticism upon Urdu Afsana consist of Narrative and Basic discussion or controversies. After that, Modern literary criticism upon Pakistani Urdu Afsana is basically formed on the basis of literary theory of symbolism, impressionism and surialism which were the newly added spices in the literary Urdu criticism written around the decades of sixties and seventies. The criticism written in that age was more mature and appealing to the critical minds. In 1960 to 1970, the origin time period of criticism upon Pakistani Urdu Afsana. It covers the various theoretical debate on Pakistani culture. It contains the effects of Modernism on decorum of literary criticism upon Pakistani Urdu Afsana. The literary study gets the taste of new theories around the eighties, ''Structuralism '' than '' Post Structuralism'' introduced as the very new and fresh terms in literary criticism of Urdu Afsana. 1980 till day shows survey of effects of post Modernism, Structuralism, Post Structuralism, the study of distinguish feature of literary criticism upon Urdu Afsana is also a part of thesis. In the last chapter, comparative study of the literary criticism upon Pakistani Urdu Afsana collected explorations and results of the discussion has been arranged. Although , the literary criticism of Pakistani Urdu Afsana is comprised of various time period discussed in this study but the division of critical inclinations of one time period affects the fictional criticism of others time periods. Therefore, criticism of Pakistani Urdu Afsana went through different stages. Till now there are changes taking place in it. From the start of twentieth century till now the critical literary theories, social and political conditions changed it and it becomes more progressive and elaborated. The objective of this study is to highlight all the ups and downs of literary criticism written upon Pakistani Urdu Afsana during 20th century. It is the analytical study of quality and evolution of literary criticism .Actually this study is an attempt to understand the critical approaches to Pakistani Urdu Afsana which vary from time to time.