{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8538738","patent":{"patent_number":"US-8538738","title":"Predicting transition from laminar to turbulent flow over a surface","assignee":null,"inventors":[],"filing_date":"2011-03-22T00:00:00.000Z","publication_date":"2013-09-17T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F"],"num_claims":32,"abstract":"A prediction of whether a point on a computer-generated surface is adjacent to laminar or turbulent flow is made using a transition prediction technique. A plurality of boundary-layer properties at the point are obtained from a steady-state solution of a fluid flow in a region adjacent to the point. A plurality of instability modes are obtained, each defined by one or more mode parameters. A vector of regressor weights is obtained for the known instability growth rates in a training dataset. For each instability mode in the plurality of instability modes, a covariance vector is determined, which is the covariance of a predicted local growth rate with the known instability growth rates. Each covariance vector is used with the vector of regressor weights to determine a predicted local growth rate at the point. Based on the predicted local growth rates, an n-factor envelope at the point is determined."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Predicting transition from laminar to turbulent flow over a surface","description":"A prediction of whether a point on a computer-generated surface is adjacent to laminar or turbulent flow is made using a transition prediction technique. A plurality of boundary-layer properties at th","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8538738","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8538738","citation_suggestion":"Patentable. \"Predicting transition from laminar to turbulent flow over a surface\" (US-8538738). https://patentable.app/patents/US-8538738","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8538738","json":"https://patentable.app/api/llm-context/US-8538738","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T21:09:34.402Z"}