{"id":{"repo_id":"greece","oai_identifier":"oai:10442/1269"},"canonical_url":"https://search.dev.ndltd.org/etd/greece/oai:10442/1269","repository":{"repo_id":"greece","name":"Greek National Archive of PhD Theses","base_url":"https://phdtheses.ekt.gr/eadd_oai/request"},"display":{"title":"ΚΑΤΑΚΟΡΥΦΕΣ ΤΥΡΒΩΔΕΙΣ ΦΛΕΒΕΣ ΣΕ ΣΤΡΩΜΑΤΟΠΟΙΗΜΕΝΟ ΑΠΟΔΕΚΤΗ","abstract":"STUDY OF THE NEAR-FIELD BEHAVIOUR OF A ROUND BUOYANT JET, DISCHARGING VERTICALLY UPWARDS IN A TWO-LAYER STABLY STRATIFIED AMBIENT. EXPERIMENTS WERE PERFORMED TO CONFIRM THE THEORETICAL RESULTS DEVELOPED IN THE ANALYSIS, WITH VARIOUS INITIAL CONDITIONS OF THE JET AND VARIOUS DEPTHS AND DENSITIES OF THE TWO LAYERS OFTHE AMBIENT. STUDY OF THE OBSERVED FLOW CASES AND THE ESTABLISHMENT OF WELL DEFINED QUANTITATIVE CRITERIA FOR FLOW CLASSIFICATION. A THEORETICAL ANALYSIS IS PERFORMED FOR THE UPFLOW REGION OF EACH TYPE OF FLOW SEPARATELY. FINALLY, THE HORIZONTAL SPREADING OF THE JET FLOW AROUND THE DENSITY INTERFACE IS STUDIED. THE SOLUTIONS WHICH RESULT FROM THE WHOLE THEORETICAL APPROACH, ARE HANDY AND QUITE ACCURATE, SO THEY CAN BE USED BOTH IN PRACTICAL DESIGN PROBLEMS AND IN FUTURE INVESTIGATIONS.","abstract_html":"STUDY OF THE NEAR-FIELD BEHAVIOUR OF A ROUND BUOYANT JET, DISCHARGING VERTICALLY UPWARDS IN A TWO-LAYER STABLY STRATIFIED AMBIENT. EXPERIMENTS WERE PERFORMED TO CONFIRM THE THEORETICAL RESULTS DEVELOPED IN THE ANALYSIS, WITH VARIOUS INITIAL CONDITIONS OF THE JET AND VARIOUS DEPTHS AND DENSITIES OF THE TWO LAYERS OFTHE AMBIENT. STUDY OF THE OBSERVED FLOW CASES AND THE ESTABLISHMENT OF WELL DEFINED QUANTITATIVE CRITERIA FOR FLOW CLASSIFICATION. A THEORETICAL ANALYSIS IS PERFORMED FOR THE UPFLOW REGION OF EACH TYPE OF FLOW SEPARATELY. FINALLY, THE HORIZONTAL SPREADING OF THE JET FLOW AROUND THE DENSITY INTERFACE IS STUDIED. THE SOLUTIONS WHICH RESULT FROM THE WHOLE THEORETICAL APPROACH, ARE HANDY AND QUITE ACCURATE, SO THEY CAN BE USED BOTH IN PRACTICAL DESIGN PROBLEMS AND IN FUTURE INVESTIGATIONS.","abstract_has_math":false,"creators":["Νάνου- Γιάνναρου, Αικατερίνη"],"institution":"National Technical University of Athens (NTUA)","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1990,"date_issued":"1990","date_published":"1990","updated_at":"2026-07-24T02:24:49Z","subjects":["ENTRAINMENT","Jet","SPREADING LAYER","Stratified flows","TURBULENT DIFFUSION","Οριζόντια εξάπλωση","Στρωματοποιημένη ροή","ΣΥΜΠΑΡΑΣΥΡΣΗ","ΤΥΡΒΩΔΗΣ ΔΙΑΧΥΣΗ","Φλέβες","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Πολιτικού Μηχανικού","Engineering and Technology","Civil Engineering"],"languages":["gre"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1269"],"render_values":[{"text":"10.12681/eadd/1269","href":"https://doi.org/10.12681/eadd/1269","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10442/hedi/1269","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Νάνου- Γιάνναρου, Αικατερίνη"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1990"]},{"key":"dc:publisher","label":"Institution","values":["National Technical University of Athens (NTUA)","Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)"]},{"key":"dc:type","label":"Dc Type","values":["PhD Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["ENTRAINMENT","Jet","SPREADING LAYER","Stratified flows","TURBULENT DIFFUSION","Οριζόντια εξάπλωση","Στρωματοποιημένη ροή","ΣΥΜΠΑΡΑΣΥΡΣΗ","ΤΥΡΒΩΔΗΣ ΔΙΑΧΥΣΗ","Φλέβες","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Πολιτικού Μηχανικού","Engineering and Technology","Civil Engineering"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["gre"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1269","http://hdl.handle.net/10442/hedi/1269"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["STUDY OF THE NEAR-FIELD BEHAVIOUR OF A ROUND BUOYANT JET, DISCHARGING VERTICALLY UPWARDS IN A TWO-LAYER STABLY STRATIFIED AMBIENT. EXPERIMENTS WERE PERFORMED TO CONFIRM THE THEORETICAL RESULTS DEVELOPED IN THE ANALYSIS, WITH VARIOUS INITIAL CONDITIONS OF THE JET AND VARIOUS DEPTHS AND DENSITIES OF THE TWO LAYERS OFTHE AMBIENT. STUDY OF THE OBSERVED FLOW CASES AND THE ESTABLISHMENT OF WELL DEFINED QUANTITATIVE CRITERIA FOR FLOW CLASSIFICATION. A THEORETICAL ANALYSIS IS PERFORMED FOR THE UPFLOW REGION OF EACH TYPE OF FLOW SEPARATELY. FINALLY, THE HORIZONTAL SPREADING OF THE JET FLOW AROUND THE DENSITY INTERFACE IS STUDIED. THE SOLUTIONS WHICH RESULT FROM THE WHOLE THEORETICAL APPROACH, ARE HANDY AND QUITE ACCURATE, SO THEY CAN BE USED BOTH IN PRACTICAL DESIGN PROBLEMS AND IN FUTURE INVESTIGATIONS.","ΜΕΛΕΤΗ ΤΗΣ ΣΥΜΠΕΡΙΦΟΡΑΣ ΣΤΟ ΚΟΝΤΙΝΟ ΠΕΔΙΟ ΡΟΗΣ ΚΑΤΑΚΟΡΥΦΩΝ ΚΥΚΛΙΚΩΝ ΑΝΩΣΤΙΚΩΝ ΦΛΕΒΩΝ, ΕΚΤΟΞΕΥΟΜΕΝΩΝ ΣΕ ΑΠΟΔΕΚΤΗ ΠΟΥ ΑΠΟΤΕΛΕΙΤΑΙ ΑΠΟ ΔΥΟ ΣΤΡΩΣΕΙΣ ΔΙΑΦΟΡΕΤΙΚΩΝ ΠΥΚΝΟΤΗΤΩΝ. ΜΕ ΣΚΟΠΟ ΤΗΝ ΕΠΑΛΗΘΕΥΣΗ ΤΗΣ ΘΕΩΡΗΤΙΚΗΣ ΑΝΑΛΥΣΗΣ, ΠΡΑΓΜΑΤΟΠΟΙΗΘΗΚΕ ΣΕΙΡΑ ΠΕΙΡΑΜΑΤΩΝ ΜΕ ΔΙΑΦΟΡΕΣ ΑΡΧΙΚΕΣ ΣΥΝΘΗΚΕΣ ΚΑΙ ΔΙΑΦΟΡΑ ΒΑΘΗ ΚΑΙ ΠΥΚΝΟΤΗΤΕΣ ΤΩΝ ΔΥΟ ΣΤΡΩΣΕΩΝ ΤΟΥ ΑΠΟΔΕΚΤΗ. ΜΕΛΕΤΗ ΤΩΝ ΔΙΑΦΟΡΩΝ ΠΕΡΙΠΤΩΣΕΩΝ ΡΟΗΣ, ΤΑΞΙΝΟΜΗΣΗ ΑΥΤΩΝ ΚΑΙ ΔΙΑΤΥΠΩΣΗ ΤΩΝ ΣΧΕΤΙΚΩΝ ΚΡΙΤΗΡΙΩΝ. ΘΕΩΡΗΤΙΚΗ ΑΝΑΛΥΣΗ ΤΟΥ ΑΝΟΔΙΚΟΥ ΠΕΔΙΟΥ ΤΩΝ ΠΑΡΑΤΗΡΟΥΜΕΝΩΝ ΠΕΡΙΠΤΩΣΕΩΝ ΡΟΗΣ. ΜΕΛΕΤΗ ΤΗΣ ΟΡΙΖΟΝΤΙΑΣ ΕΞΑΠΛΩΣΗΣ ΤΩΝ ΦΛΕΒΩΝ ΠΕΡΙ ΤΗΝ ΠΥΚΝΟΚΛΙΝΗ. ΟΙ ΠΡΟΤΕΙΝΟΜΕΝΕΣ ΑΠΟ ΤΗΝ ΟΛΗ ΘΕΩΡΗΤΙΚΗ ΑΝΑΛΥΣΗ ΛΥΣΕΙΣ ΕΙΝΑΙ ΕΥΧΡΗΣΤΕΣ ΚΑΙ ΔΙΝΟΥΝ ΑΠΟΤΕΛΕΣΜΑΤΑ ΑΡΚΕΤΑ ΑΚΡΙΒΗ, ΠΟΥ ΜΠΟΡΟΥΝ ΝΑ ΧΡΗΣΙΜΟΠΟΙΗΘΟΥΝ ΤΟΣΟ ΣΤΑ ΠΡΑΚΤΙΚΑ ΠΡΟΒΛΗΜΑΤΑ, ΟΣΟ ΚΑΙ ΣΑΝ ΒΑΣΗ ΓΙΑ ΜΕΛΛΟΝΤΙΚΕΣ ΕΡΕΥΝΕΣ."]},{"key":"dc:title","label":"Title","values":["ΚΑΤΑΚΟΡΥΦΕΣ ΤΥΡΒΩΔΕΙΣ ΦΛΕΒΕΣ ΣΕ ΣΤΡΩΜΑΤΟΠΟΙΗΜΕΝΟ ΑΠΟΔΕΚΤΗ","THE ROUND JET IN A TWO-LAYER STRATIFIER AMBIENT"]}]}],"canonical_facts":{"dc:creator":["Νάνου- Γιάνναρου, Αικατερίνη"],"dc:date":["1990"],"dc:description":["STUDY OF THE NEAR-FIELD BEHAVIOUR OF A ROUND BUOYANT JET, DISCHARGING VERTICALLY UPWARDS IN A TWO-LAYER STABLY STRATIFIED AMBIENT. EXPERIMENTS WERE PERFORMED TO CONFIRM THE THEORETICAL RESULTS DEVELOPED IN THE ANALYSIS, WITH VARIOUS INITIAL CONDITIONS OF THE JET AND VARIOUS DEPTHS AND DENSITIES OF THE TWO LAYERS OFTHE AMBIENT. STUDY OF THE OBSERVED FLOW CASES AND THE ESTABLISHMENT OF WELL DEFINED QUANTITATIVE CRITERIA FOR FLOW CLASSIFICATION. A THEORETICAL ANALYSIS IS PERFORMED FOR THE UPFLOW REGION OF EACH TYPE OF FLOW SEPARATELY. FINALLY, THE HORIZONTAL SPREADING OF THE JET FLOW AROUND THE DENSITY INTERFACE IS STUDIED. THE SOLUTIONS WHICH RESULT FROM THE WHOLE THEORETICAL APPROACH, ARE HANDY AND QUITE ACCURATE, SO THEY CAN BE USED BOTH IN PRACTICAL DESIGN PROBLEMS AND IN FUTURE INVESTIGATIONS.","ΜΕΛΕΤΗ ΤΗΣ ΣΥΜΠΕΡΙΦΟΡΑΣ ΣΤΟ ΚΟΝΤΙΝΟ ΠΕΔΙΟ ΡΟΗΣ ΚΑΤΑΚΟΡΥΦΩΝ ΚΥΚΛΙΚΩΝ ΑΝΩΣΤΙΚΩΝ ΦΛΕΒΩΝ, ΕΚΤΟΞΕΥΟΜΕΝΩΝ ΣΕ ΑΠΟΔΕΚΤΗ ΠΟΥ ΑΠΟΤΕΛΕΙΤΑΙ ΑΠΟ ΔΥΟ ΣΤΡΩΣΕΙΣ ΔΙΑΦΟΡΕΤΙΚΩΝ ΠΥΚΝΟΤΗΤΩΝ. ΜΕ ΣΚΟΠΟ ΤΗΝ ΕΠΑΛΗΘΕΥΣΗ ΤΗΣ ΘΕΩΡΗΤΙΚΗΣ ΑΝΑΛΥΣΗΣ, ΠΡΑΓΜΑΤΟΠΟΙΗΘΗΚΕ ΣΕΙΡΑ ΠΕΙΡΑΜΑΤΩΝ ΜΕ ΔΙΑΦΟΡΕΣ ΑΡΧΙΚΕΣ ΣΥΝΘΗΚΕΣ ΚΑΙ ΔΙΑΦΟΡΑ ΒΑΘΗ ΚΑΙ ΠΥΚΝΟΤΗΤΕΣ ΤΩΝ ΔΥΟ ΣΤΡΩΣΕΩΝ ΤΟΥ ΑΠΟΔΕΚΤΗ. ΜΕΛΕΤΗ ΤΩΝ ΔΙΑΦΟΡΩΝ ΠΕΡΙΠΤΩΣΕΩΝ ΡΟΗΣ, ΤΑΞΙΝΟΜΗΣΗ ΑΥΤΩΝ ΚΑΙ ΔΙΑΤΥΠΩΣΗ ΤΩΝ ΣΧΕΤΙΚΩΝ ΚΡΙΤΗΡΙΩΝ. ΘΕΩΡΗΤΙΚΗ ΑΝΑΛΥΣΗ ΤΟΥ ΑΝΟΔΙΚΟΥ ΠΕΔΙΟΥ ΤΩΝ ΠΑΡΑΤΗΡΟΥΜΕΝΩΝ ΠΕΡΙΠΤΩΣΕΩΝ ΡΟΗΣ. ΜΕΛΕΤΗ ΤΗΣ ΟΡΙΖΟΝΤΙΑΣ ΕΞΑΠΛΩΣΗΣ ΤΩΝ ΦΛΕΒΩΝ ΠΕΡΙ ΤΗΝ ΠΥΚΝΟΚΛΙΝΗ. ΟΙ ΠΡΟΤΕΙΝΟΜΕΝΕΣ ΑΠΟ ΤΗΝ ΟΛΗ ΘΕΩΡΗΤΙΚΗ ΑΝΑΛΥΣΗ ΛΥΣΕΙΣ ΕΙΝΑΙ ΕΥΧΡΗΣΤΕΣ ΚΑΙ ΔΙΝΟΥΝ ΑΠΟΤΕΛΕΣΜΑΤΑ ΑΡΚΕΤΑ ΑΚΡΙΒΗ, ΠΟΥ ΜΠΟΡΟΥΝ ΝΑ ΧΡΗΣΙΜΟΠΟΙΗΘΟΥΝ ΤΟΣΟ ΣΤΑ ΠΡΑΚΤΙΚΑ ΠΡΟΒΛΗΜΑΤΑ, ΟΣΟ ΚΑΙ ΣΑΝ ΒΑΣΗ ΓΙΑ ΜΕΛΛΟΝΤΙΚΕΣ ΕΡΕΥΝΕΣ."],"dc:identifier":["10.12681/eadd/1269","http://hdl.handle.net/10442/hedi/1269"],"dc:language":["gre"],"dc:publisher":["National Technical University of Athens (NTUA)","Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)"],"dc:subject":["ENTRAINMENT","Jet","SPREADING LAYER","Stratified flows","TURBULENT DIFFUSION","Οριζόντια εξάπλωση","Στρωματοποιημένη ροή","ΣΥΜΠΑΡΑΣΥΡΣΗ","ΤΥΡΒΩΔΗΣ ΔΙΑΧΥΣΗ","Φλέβες","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Πολιτικού Μηχανικού","Engineering and Technology","Civil Engineering"],"dc:title":["ΚΑΤΑΚΟΡΥΦΕΣ ΤΥΡΒΩΔΕΙΣ ΦΛΕΒΕΣ ΣΕ ΣΤΡΩΜΑΤΟΠΟΙΗΜΕΝΟ ΑΠΟΔΕΚΤΗ","THE ROUND JET IN A TWO-LAYER STRATIFIER AMBIENT"],"dc:type":["PhD Thesis"]},"updated_at":"2026-07-24T02:24:49Z"}