{"id":4071,"date":"2019-02-12T16:21:56","date_gmt":"2019-02-12T16:21:56","guid":{"rendered":"https:\/\/cyflexdoc.wpengine.com\/usage-help-manual\/12-fluid-flow-computations\/volef\/"},"modified":"2025-09-20T13:23:59","modified_gmt":"2025-09-20T18:23:59","slug":"volef","status":"publish","type":"page","link":"https:\/\/cyflex.com\/index.php\/usage-help-manual\/19-fluid-flow-computations\/volef\/","title":{"rendered":"volef"},"content":{"rendered":"
\n

Purpose:<\/h3>\n<\/div>\n
\n
\n

Compute volumetric efficiency for a single engine manifold on a continuous basis.<\/p>\n<\/dd>\n<\/dl>\n

Enter:<\/h3>\n
\n
\n

volef<\/strong> <priority> <interval> <filename> [+c]<\/p>\n<\/dd>\n<\/dl>\n

Where:<\/h3>\n
\n
\n
\n\n\n\n<\/colgroup>\n\n\n\n\n\n
\n

priority<\/p>\n<\/td>\n

\n

Specify the system task priority.<\/p>\n<\/td>\n<\/tr>\n

\n

interval<\/p>\n<\/td>\n

\n

Specify the process interval. Specify FAS, MED, or SLO or in milliseconds.\u00a0\u00a0<\/p>\n<\/td>\n<\/tr>\n

\n

filename<\/p>\n<\/td>\n

\n

Specify the specification file path.<\/p>\n<\/td>\n<\/tr>\n

\n

+c<\/p>\n<\/td>\n

\n

Optional. Specify this flag to identify this task as critical to the watchdog.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/dd>\n<\/dl>\n

Example:<\/h3>\n
\n
\n

volef<\/strong> 8 SLO specs\/volef_specs.315 +c &
\nThe above command spawns ‘volef’ in the background at a priority of 8. The computations are performed once every second using the specifications given in the file \/asset\/specs\/volef_specs.315. The task is also assigned to be a critical task. As a result, if the task ever stops responding to the watchdog, any test that is running will be aborted.<\/p>\n

The volef task will register its name with the filename (not the full pathame), in this case “volef_specs.315”.\u00a0 This name can be used by the ‘re-read’ command to request that it update the specifications by reading the specification file again.\u00a0 This feature allows the specifications to be changed “on-the-fly” without slaying and restarting the app.\u00a0<\/p>\n<\/dd>\n<\/dl>\n

Notes:<\/h3>\n
\n
\n

This task is normally started in the go script that starts CyFlex and assumes a 4-cycle engine.<\/p>\n<\/dd>\n<\/dl>\n

See Also:<\/h3>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0The volef2<\/a> application can be used to compute volumetric efficiency for 2-cycle engines.<\/p>\n

\n
\n

Computing Volumetric Efficiency<\/a>, also see \/cyflex\/specs.def\/volef.def for example spec<\/p>\n<\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"

Purpose: Compute volumetric efficiency for a single engine manifold on a continuous basis. Enter: volef <priority> <interval> <filename> [+c] Where: priority Specify the system task priority. interval Specify the process interval. Specify FAS, MED, or SLO or in milliseconds.\u00a0\u00a0 filename Specify the specification file path. +c Optional. Specify this flag to identify this task as […]<\/p>\n","protected":false},"author":47,"featured_media":0,"parent":1959,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-4071","page","type-page","status-publish","hentry"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/pages\/4071","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/users\/47"}],"replies":[{"embeddable":true,"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/comments?post=4071"}],"version-history":[{"count":0,"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/pages\/4071\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/pages\/1959"}],"wp:attachment":[{"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/media?parent=4071"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}