| Subject name (in Hungarian, in English) | Flow Stability | |||
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Flow Stability
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| Neptun code | BMEGEVGNX27 | |||
| Type | study unit with contact hours | |||
| Course types and number of hours (weekly / semester) | course type: | lecture (theory) | exercise | laboratory excercise |
| number of hours (weekly): | 2 | 0 | 0 | |
| nature (connected / stand-alone): | - | - | - | |
| Type of assessments (quality evaluation) | mid-term grade | |||
| ECTS | 3 | |||
| Subject coordinator | name: | Nagy Péter Tamás | ||
| post: | adjunct | |||
| contact: | pnagy@hds.bme.hu | |||
| Host organization | Department of Hydrodynamic Systems | |||
| http://www.hds.bme.hu/ | ||||
| Course homepage | http://www.hds.bme.hu/oktatas.php?sm=1&xml=BMEGEVGNX27 | |||
| Course language | hungarian, english | |||
| Primary curriculum type | mandatory elective | |||
| Direct prerequisites | Strong prerequisite | none | ||
| Weak prerequisite | ||||
| Parallel prerequisite | ||||
| Milestone prerequisite | at least obtained 0 ECTS | |||
| Excluding condition | none | |||
Aim
The course aims to acquaint students with the fundamental issues of flow stability. Topics covered include fluid flow and mathematical methods for investigating the resistance to perturbations of wall-bounded plane flows and free rays. In addition to the lectures, students deepen their knowledge with the help of a semester project assignment, which typically includes the programming of numerical methods.
Learning outcomes
Competences that can be acquired by completing the course
Knowledge
Knows the background of modern flow stability testing methods. The student is aware of the principles of linearization of Navier-Stokes equations. The student informed the basics of semi discretization of partial differential equations. The student is aware of the method of linear stability testing. The student has knowledge of the most commonly used numerical discretization methods. The student knows the Orr-Sommerfeld equation and the difficulties of solving it. The student knows the complex matrix method in relation to the Orr-Sommerfeld equation. Understands the problem of fluid free jet stability. Understands the problem of fluid sheet stability. The student has knowledge of dealing with the problem of fluid free jet and fluid sheet stability.
Ability
Able to select an appropriate calculation method to investigate a fluid stability problem. The student is able to eliminate errors that occur during model building. Use appropriate outcome evaluation methods. The student correctly examines the dimensionless equivalents of the calculated physical quantities. Use your existing knowledge correctly to solve the most common fluid stability issues. Able to cast his modeling knowledge into a usable computer program. Use the complex matrix method to solve a flow problem. He correctly concludes on the issue of fluid free jet stability. The student correctly concludes on the issue of fluid sheet stability. Addresses stability issues with liquid jets and liquid sheets.
Attitude
The student constantly monitors his work, results and conclusions. Applying the acquired technical knowledge, the student strives to get to know the phenomena and to explain their laws. Open to the use of IT devices. The student seeks to enforce the principles of energy efficiency and environmental awareness. The student develops his/her ability to provide accurate and error-free problem solving, engineering precision and accuracy. The student publishes his/her results in accordance with the rules of the profession. Expresses his/her views and opinions without insulting others. The student sees the connections between mathematics and physics.
Independence and responsibility
Collaborates with the instructor to expand knowledge. Readily accepts reasonable professional and other criticism. In certain situations, as a member of a team, he/she cooperates with his/her fellow students in solving a task. In possession of his/her knowledge, based on analysis, the student makes a well-founded, responsible decision. The student thinks over the tasks and the problems and solves them independently based on the given sources. The student is committed to the methods and principles of systemic thinking and problem-solving.
Teaching methodology
During the teaching of the subject, the lectures take place in a frontal way. During the lectures, we strive for the continuous involvement and dialogue of the students. In the acquisition of theoretical material, we always emphasize the practical applicability of what has been learned. There is continuous consultation and communication during the mid-term project task. To develop teamwork skills, assign tasks to two groups.
Support materials
Textbook
The subject does not require a textbook that has an ISBN and is newer than the 1995 publication year.
Lecture notes
The subject does not require a note that has an ISBN and is newer than the 2005 edition.
Online material
Validity of the course description
| Start of validity: | 2023. February 13. |
| End of validity: | 2027. July 15. |
General rules
Learning outcomes are determined based on performance evaluation (in-house) and project task documentation. Performance appraisal is used for the complex, written examination of the subject elements of the subject's knowledge, ability and independence and responsibility type. On the one hand, the dissertation focuses on applying the acquired knowledge, so it focuses on problem recognition and solution. On the other hand, it asks for the necessary lexical knowledge during performance evaluation. Partial performance assessment is a complex way of assessing the competency elements of the subject's ability, attitude, and independence and responsibility type, the form of which is the group-prepared documentation of the project carried out during the semester.
Assessment methods
Detailed description of mid-term assessments
| Mid-term assessment No. 1 | ||
| Type: | summative assessment | |
| Number: | 1 | |
| Purpose, description: | Assessment measures students ’learning outcomes defined by knowledge and ability type competencies. Accordingly, the evaluation assesses the existence of the designated theoretical knowledge and the application of skills. It will be completed on the date specified in the academic performance evaluation plan, expected to be in the 14th week of education. 50 points can be obtained in the summary performance evaluation. | |
| Mid-term assessment No. 2 | ||
| Type: | formative assessment, point-in-time personal act | |
| Number: | 1 | |
| Purpose, description: | The mid-term performance is evaluated based on the project team's documentation based on applying the acquired theoretical knowledge to a practical problem. A maximum of 50 points is available for project work based on the thoroughness, practicality of the solution method, and documentation quality. It is impossible to differentiate between the students in the project group according to their contribution to success. | |
Detailed description of assessments performed during the examination period
The subject does not include assessment during the examination period.
The weight of mid-term assessments in signing or in final grading
| ID | Proportion |
|---|---|
| Mid-term assessment No. 1 | 40 % |
| Mid-term assessment No. 2 | 60 % |
The condition for signing is that the score obtained in the mid-year assessments is at least 50%.
The weight of partial exams in grade
There is no exam belongs to the subject.
Determination of the grade
| Grade | ECTS | The grade expressed in percents |
|---|---|---|
| very good (5) | Excellent [A] | above 95 % |
| very good (5) | Very Good [B] | 88 % - 95 % |
| good (4) | Good [C] | 75 % - 88 % |
| satisfactory (3) | Satisfactory [D] | 63 % - 75 % |
| sufficient (2) | Pass [E] | 50 % - 63 % |
| insufficient (1) | Fail [F] | below 50 % |
The lower limit specified for each grade already belongs to that grade.
Attendance and participation requirements
The lack of the value means that there is no attendance requirement.
Special rules for improving, retaken and replacement
The special rules for improving, retaken and replacement shall be interpreted and applied in conjunction with the general rules of the CoS (TVSZ).
| Need mid-term assessment to invidually complete? | ||
| yes | ||
| The way of retaking or improving a summary assessment for the first time: | ||
| each summative assessment can be retaken or improved | ||
| Is the retaking-improving of a summary assessment allowed, and if so, than which form: | ||
| retake or grade-improving exam not possible | ||
| Taking into account the previous result in case of improvement, retaken-improvement: | ||
| out of multiple results, the best one is to be taken into account | ||
| The way of retaking or improving a partial assessment for the first time: | ||
| partial assesment(s) in this group can be improved or repeated once up to the end of the repeat period | ||
Study work required to complete the course
| Activity | hours / semester |
|---|---|
| participation in contact classes | 28 |
| preparation for summary assessments | 16 |
| additional time required to complete the subject | 46 |
| altogether | 90 |
Validity of subject requirements
| Start of validity: | 2023. February 13. |
| End of validity: | 2027. July 15. |
Primary course
The primary (main) course of the subject in which it is advertised and to which the competencies are related:
Mechanical engineering
Link to the purpose and (special) compensations of the Regulation KKK
This course aims to improve the following competencies defined in the Regulation KKK:
Knowledge
- Student is familiar with the general and specific mathematical, scientific and social principles, rules, contexts and procedures needed to operate in the field of engineering.
- Student has the knowledge of the theories and contexts of fundamental importance in the field of engineering and of the terminology which underpins them.
- Student has the knowledge and understanding of computer modelling and simulation tools and methods relevant to the field of engineering.
Ability
- Student has the ability to apply and develop procedures, models and information technologies used in the design, organisation and operation of engineering systems and processes.
- Student has the ability to apply the general and specific mathematical, scientific and social principles, rules, relationships and procedures acquired in solving problems in the field of engineering.
- Student has the ability to apply the theories and related terminology in an innovative way when solving problems in a given field of engineering.
Attitude
- Student is open and receptive to learning, embracing and authentically communicating professional, technological development and innovation in engineering.
- Student strives to plan and carry out tasks to a high professional standard, either independently or in a team.
- Student is committed to high quality work and sets an example to student's colleagues in this respect.
Independence and responsibility
- Student acts independently and proactively in solving professional problems.
- Student shares her acquired knowledge and experience through formal, non-formal and informal information transfer with those in her field.
- Student has the ability to work independently on engineering tasks.
Prerequisites for completing the course
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Knowledge type competencies
(a set of prior knowledge, the existence of which is not obligatory, but greatly facilitates the successful completion of the subject) |
Good knowledge of mathematics, especially in the field of differential equations. Good hydrological knowledge. Knowledge of numerical methods. Programming skills. |
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Ability type competencies
(a set of prior abilities and skills, the existence of which is not obligatory, but greatly contributes to the successful completion of the subject) |
Seeing the relationship between mathematical equations and a physical problem. Expressing a math problem in a computer program. |