دورية أكاديمية
Inertialess gyrating engines.
| العنوان: | Inertialess gyrating engines. |
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| المؤلفون: | Siches JV; Department of Mechanical and Aerospace Engineering, University of California, Irvine, CA 92697, USA., Miangolarra OM; Department of Mechanical and Aerospace Engineering, University of California, Irvine, CA 92697, USA., Taghvaei A; Aeronautics and Astronautics Department, University of Washington, Seattle, WA 98195, USA., Chen Y; School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA., Georgiou TT; Department of Mechanical and Aerospace Engineering, University of California, Irvine, CA 92697, USA. |
| المصدر: | PNAS nexus [PNAS Nexus] 2022 Nov 04; Vol. 1 (5), pp. pgac251. Date of Electronic Publication: 2022 Nov 04 (Print Publication: 2022). |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Oxford University Press on behalf of the National Academy of Sciences Country of Publication: England NLM ID: 9918367777906676 Publication Model: eCollection Cited Medium: Internet ISSN: 2752-6542 (Electronic) Linking ISSN: 27526542 NLM ISO Abbreviation: PNAS Nexus Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Original Publication: [Oxford] : Oxford University Press on behalf of the National Academy of Sciences, [2022]- |
| مستخلص: | A typical model for a gyrating engine consists of an inertial wheel powered by an energy source that generates an angle-dependent torque. Examples of such engines include a pendulum with an externally applied torque, Stirling engines, and the Brownian gyrating engine. Variations in the torque are averaged out by the inertia of the system to produce limit cycle oscillations. While torque generating mechanisms are also ubiquitous in the biological world, where they typically feed on chemical gradients, inertia is not a property that one naturally associates with such processes. In the present work, seeking ways to dispense of the need for inertial effects, we study an inertia-less concept where the combined effect of coupled torque-producing components averages out variations in the ambient potential and helps overcome dissipative forces to allow sustained operation for vanishingly small inertia. We exemplify this inertia-less concept through analysis of two of the aforementioned engines, the Stirling engine, and the Brownian gyrating engine. An analogous principle may be sought in biomolecular processes as well as in modern-day technological engines, where for the latter, the coupled torque-producing components reduce vibrations that stem from the variability of the generated torque. (© The Author(s) 2022. Published by Oxford University Press on behalf of National Academy of Sciences.) |
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| فهرسة مساهمة: | Keywords: Brownian gyrator; Stirling engine; averaging; limit cycle oscillation |
| تواريخ الأحداث: | Date Created: 20230130 Latest Revision: 20230202 |
| رمز التحديث: | 20231215 |
| مُعرف محوري في PubMed: | PMC9802224 |
| DOI: | 10.1093/pnasnexus/pgac251 |
| PMID: | 36712376 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 2752-6542 |
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| DOI: | 10.1093/pnasnexus/pgac251 |