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This makes Clebsch maps useful for visualization and fluid dynamics analysis. Additionally they can be used in the context of simulations to enhance flows through the introduction of subgrid vorticity. In this paper we study\n            <jats:italic>spherical<\/jats:italic>\n            Clebsch maps, which are particularly attractive. Elucidating their geometric structure, we show that such maps can be found as minimizers of a non-linear Dirichlet energy. To illustrate our approach we use a number of benchmark problems and apply it to numerically given flow fields. Code and a video can be found in the ACM Digital Library.\n          <\/jats:p>","DOI":"10.1145\/3072959.3073591","type":"journal-article","created":{"date-parts":[[2017,7,21]],"date-time":"2017-07-21T12:24:07Z","timestamp":1500639847000},"page":"1-11","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":26,"title":["Inside fluids"],"prefix":"10.1145","volume":"36","author":[{"given":"Albert","family":"Chern","sequence":"first","affiliation":[{"name":"Caltech"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Felix","family":"Kn\u00f6ppel","sequence":"additional","affiliation":[{"name":"TU Berlin"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ulrich","family":"Pinkall","sequence":"additional","affiliation":[{"name":"TU Berlin"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter","family":"Schr\u00f6der","sequence":"additional","affiliation":[{"name":"Caltech"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2017,7,20]]},"reference":[{"key":"e_1_2_2_1_1","volume-title":"Tensor Analysis and Applications. 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