Prandtl number: Revision history

18 April 2024

• curprev 16:4216:42, 18 April 2024‎ 86.188.187.210 talk‎ 7,575 bytes +4‎ Insert missing word "the". (Note there is repetition within the 'Physical Interpretation' section which could be addressed.) undo

24 October 2023

• curprev 19:0919:09, 24 October 2023‎ Tom.Reding talk contribs‎ m 7,571 bytes −405‎ +{{Authority control}} (1 ID from Wikidata); WP:GenFixes & cleanup on undo Tag: AWB

28 August 2023

• curprev 18:3818:38, 28 August 2023‎ Wprlh talk contribs‎ 7,976 bytes +3‎ →‎Physical interpretation: Fixed typos undo Tags: Mobile edit Mobile web edit

30 June 2023

• curprev 07:1507:15, 30 June 2023‎ Sauer202 talk contribs‎ 7,973 bytes 0‎ →‎Physical interpretation: Common nouns are not capitalised in English undo Tags: Mobile edit Mobile web edit Advanced mobile edit
• curprev 07:1507:15, 30 June 2023‎ Sauer202 talk contribs‎ 7,973 bytes 0‎ →‎Experimental values: Common nouns are not capitalised in English undo Tags: Mobile edit Mobile web edit Advanced mobile edit

1 April 2023

• curprev 14:3914:39, 1 April 2023‎ AnonymousAardvark talk contribs‎ m 7,973 bytes −24‎ The previous statement that "convection is more effective in transferring energy in comparison to conduction" is true, but misleading. In fact, the low thermal conductivity of engine oils is not a desired feature. There is ongoing research to improve thermal conductivity of engine oils (https://thermtest.com/why-the-thermal-properties-of-engine-oils-are-important-for-maintaining-a-healthy-car-engine). Ergo, a good engine oil will have high viscosity and high thermal conductivity. Meaning Pr = 1. undo Tag: Visual edit

4 February 2023

• curprev 20:4720:47, 4 February 2023‎ Ruslik0 talk contribs‎ 7,997 bytes +4‎ ce undo

20 January 2023

• curprev 20:1720:17, 20 January 2023‎ 86.138.106.0 talk‎ 7,993 bytes +42‎ →‎Physical Interpretation undo

14 August 2022

• curprev 12:0412:04, 14 August 2022‎ Wham2001 talk contribs‎ 7,951 bytes +64‎ Adding local short description: "Ratio of kinematic to thermal diffusivity", overriding Wikidata description "quotient of kinematic viscosity and thermal diffusivity for a fluid" undo Tag: Shortdesc helper

1 August 2022

• curprev 14:1814:18, 1 August 2022‎ 66.57.5.210 talk‎ 7,887 bytes −55‎ "The Prandtl number is named after Ludwig Prandtl." This sentence is already mentioned in the first line of the article. undo

7 April 2022

• curprev 13:2413:24, 7 April 2022‎ 194.57.114.138 talk‎ 7,942 bytes +38‎ Clarification of referenced equation. Equation was derived using a laminar boundary layer assumption. undo

19 November 2021

• curprev 07:0607:06, 19 November 2021‎ Materialscientist talk contribs‎ m 7,904 bytes −5‎ Reverted edits by 77.246.52.185 (talk) (HG) (3.4.10) undo Tag: Rollback
• curprev 07:0507:05, 19 November 2021‎ 77.246.52.185 talk‎ 7,909 bytes +5‎ No edit summary undo Tags: Reverted Mobile edit Mobile web edit

30 May 2021

• curprev 17:5517:55, 30 May 2021‎ Chaosand talk contribs‎ m 7,904 bytes +36‎ Substitute ≪ for << and ≫ for >> and also make Pr have Roman font consistently. undo

2 May 2021

• curprev 13:2313:23, 2 May 2021‎ 2601:285:581:2540:5883:fa5e:7b8:c21a talk‎ 7,868 bytes 0‎ →‎Physical Interpretation undo Tag: Manual revert
• curprev 13:1913:19, 2 May 2021‎ 2601:285:581:2540:5883:fa5e:7b8:c21a talk‎ 7,868 bytes 0‎ →‎Physical Interpretation undo Tag: Reverted
• curprev 13:1713:17, 2 May 2021‎ 2601:285:581:2540:5883:fa5e:7b8:c21a talk‎ 7,868 bytes 0‎ →‎Physical Interpretation undo Tag: Reverted

19 April 2021

• curprev 22:4822:48, 19 April 2021‎ Dolphin51 talk contribs‎ m 7,868 bytes −27‎ →‎top: Erased redundant, unencyclopaedic words. undo

8 April 2021

• curprev 21:4221:42, 8 April 2021‎ Citation bot talk contribs‎ 7,895 bytes −3‎ Misc citation tidying. | Use this bot. Report bugs. | Suggested by Jonesey95 | Category:CS1 errors: empty unknown parameters | via #UCB_Category 236/307 undo

3 February 2021

• curprev 22:4122:41, 3 February 2021‎ WikiCleanerBot talk contribs‎ m 7,898 bytes 0‎ v2.04b - Bot T20 CW#61 - Fix errors for CW project (Reference before punctuation) undo Tag: WPCleaner

2 February 2021

• curprev 00:4900:49, 2 February 2021‎ 130.221.224.7 talk‎ 7,898 bytes +1,066‎ Added flat plate equations to demonstrate how heat transfer changes for different Prandtl numbers undo
• curprev 00:2800:28, 2 February 2021‎ 130.221.224.7 talk‎ 6,832 bytes +37‎ Added limits of applicability for the boundary layer ratio equation undo
• curprev 00:2500:25, 2 February 2021‎ 130.221.224.7 talk‎ 6,795 bytes +488‎ Added approximation for Pohlhausen's boundary layer ratio result. undo
• curprev 00:0100:01, 2 February 2021‎ 130.221.224.7 talk‎ 6,307 bytes +55‎ Sentence about who the number is named after. This type of info is given on other non-dimensional number pages (such as the Reynolds number and the Lewis number). undo

1 February 2021

• curprev 23:5723:57, 1 February 2021‎ 130.221.224.7 talk‎ 6,252 bytes +87‎ Added clause that Le = Pr/Sc (in "Convective Heat and Mass Transfer" by Kays and Crawford) or Le = Sc/Pr (in "Fundamentals of Heat Mass Transfer" by Incropera and DeWitt.) undo
• curprev 23:5223:52, 1 February 2021‎ 130.221.224.7 talk‎ 6,165 bytes +87‎ Reorganized the page so that it wasn't all in the introduction undo Tag: Visual edit

11 January 2021

• curprev 23:2523:25, 11 January 2021‎ WikiCleanerBot talk contribs‎ m 6,078 bytes 0‎ v2.04b - Bot T20 CW#61 - Fix errors for CW project (Reference before punctuation) undo Tag: WPCleaner

19 December 2020

• curprev 19:2819:28, 19 December 2020‎ 111.88.226.104 talk‎ 6,078 bytes −7‎ No edit summary undo Tags: Mobile edit Mobile web edit

31 October 2020

• curprev 01:4401:44, 31 October 2020‎ Xihr talk contribs‎ 6,085 bytes +4‎ clarify order of operations undo

28 August 2020

• curprev 06:1506:15, 28 August 2020‎ Cewbot talk contribs‎ m 6,081 bytes −22‎ Normalize {{Multiple issues}}: Remove {{Multiple issues}} for only 1 maintenance template(s): Refimprove undo

25 August 2020

• curprev 17:2717:27, 25 August 2020‎ Esprit15d talk contribs‎ 6,103 bytes −36‎ rm {{more footnotes|date=August 2014}}, no longer applies undo
• curprev 17:2717:27, 25 August 2020‎ Esprit15d talk contribs‎ 6,139 bytes +26‎ →‎References: general references undo

9 July 2020

• curprev 07:1607:16, 9 July 2020‎ 2409:4062:201e:9e6b:9082:b059:338d:b783 talk‎ 6,113 bytes +1‎ →‎Formula for the calculation of the Prandtl number of air and solid undo Tag: Visual edit

25 June 2020

• curprev 13:5013:50, 25 June 2020‎ JohnDarwell talk contribs‎ 6,112 bytes −1‎ No edit summary undo Tag: Visual edit
• curprev 13:4913:49, 25 June 2020‎ JohnDarwell talk contribs‎ m 6,113 bytes +1,256‎ Formula for calculating Prandtl numbers of air and water undo Tag: Visual edit

4 June 2020

• curprev 13:3613:36, 4 June 2020‎ 148.56.224.128 talk‎ 4,857 bytes 0‎ No edit summary undo

23 January 2020

• curprev 12:3712:37, 23 January 2020‎ Moritz Gradmann talk contribs‎ m 4,857 bytes +2‎ Unit for thermal conductivity is W/m·K, for specific heat J/kg·K. Was given as W/m-K and J/kg-K, rspectively. undo

26 September 2019

• curprev 08:0308:03, 26 September 2019‎ 86.188.187.210 talk‎ 4,855 bytes −17‎ Remove typo and improve wording of 1 sentence. No change to meaning. undo

12 August 2019

• curprev 05:1505:15, 12 August 2019‎ 73.103.85.151 talk‎ 4,872 bytes 0‎ No edit summary undo

29 June 2019

• curprev 12:0412:04, 29 June 2019‎ Dolphin51 talk contribs‎ m 4,872 bytes −9‎ →‎top: Erased redundant, unencyclopedic words. undo

26 June 2019

• curprev 15:4115:41, 26 June 2019‎ Gradies talk contribs‎ 4,881 bytes +1‎ No edit summary undo

7 May 2019

• curprev 19:5819:58, 7 May 2019‎ Filipović Zoran talk contribs‎ 4,880 bytes +19‎ →‎References undo
• curprev 19:5819:58, 7 May 2019‎ Filipović Zoran talk contribs‎ 4,861 bytes −19‎ →‎See also undo

8 April 2019

• curprev 17:5017:50, 8 April 2019‎ 129.215.230.150 talk‎ 4,880 bytes −5‎ No edit summary undo

11 September 2018

• curprev 18:2218:22, 11 September 2018‎ User-duck talk contribs‎ 4,885 bytes −38‎ Fix OCLC cite. undo
• curprev 17:3417:34, 11 September 2018‎ Hkuralkar talk contribs‎ m 4,923 bytes +702‎ I have added a practical example on prandtl number. undo Tag: Visual edit

7 June 2018

• curprev 13:3813:38, 7 June 2018‎ Salix alba talk contribs‎ 4,221 bytes −18‎ use k for thermal conductivity, for consistancy in article undo
• curprev 13:3213:32, 7 June 2018‎ Salix alba talk contribs‎ 4,239 bytes +5‎ Undid revision 844814287 by 223.225.99.123 broke math syntax undo Tag: Undo
• curprev 10:1910:19, 7 June 2018‎ 223.225.99.123 talk‎ 4,234 bytes −5‎ No edit summary undo

18 May 2018

• curprev 10:2610:26, 18 May 2018‎ Deepakp679 talk contribs‎ 4,239 bytes −3‎ Prandtl number of Air is 0.71. Most of the gasses also have Pr value similar to air. undo