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Çѱ¹¼öÀÚ¿øÇÐȸ / v.21, no.2, 1988³â, pp.193-201
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Åä¾ç¼öºÐ Ư¼ºÇÔ¼öÀÇ °íÂ÷ SCANNING Ä¿ºê¿¡ ´ëÇÑ °£·«ÇÑ ¸ðµ¨
( A SIMPLED MODEL FOR HIGHER ORDER SCANNING CURVES IN THE SOIL WATER CHARACTERISTIC FUNCTION ) |
| Á¤»ó¿Á; °æºÏ´ëÇб³ ³ó°ú´ëÇÐ(°øÇйڻç, ±â¼ú»ç);
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| Åä¾ç¼öºÐ Ư¼ºÇÔ¼öÀÇ °íÂ÷ scanning Ä¿ºê¿¡ ´ëÇÑ °£·«ÇÑ ¸ðµ¨À» °³¹ßÇÏ¿´´Ù. MualemÀÇ °³³äÀû À̷¸ðµ¨À» °íÂ÷ scanning Ä¿ºê¿¡ ´ëÇÏ¿© °£·«ÇÏ°Ô º¯Çü½ÃÄ×´Ù. Áï, °íÂ÷ °ÇÁ¶°î¼±¿¡ ´ëÇÏ¿©´Â ¸¶Áö¸· ȸÇâÁ¡À» ¿¬Á÷ÇÏÇâÀ¸·Î À̵¿½ÃÄÑ ÁÖ½ÀÀ±°î¼±°ú ¸¸³ª´Â Á¡À» ȸÇâÁ¡À¸·Î ÇÏ´Â ÀÏÂ÷°ÇÁ¶°î¼±À¸·Î °£ÁÖÇÏ¿´´Ù. ¶Ç, °íÂ÷ ½ÀÀ±°î¼±¿¡ ´ëÇÏ¿©´Â ¸¶Áö¸· ȸÇâÁ¡À» Áö³ª´Â °¡»óÀÇ ÁÖ°ÇÁ¶°î¼±¿¡¼ Ãâ¹ßÇÏ´Â ÀÏÂ÷½ÀÀ±°î¼±À¸·Î °£ÁÖÇÏ¿´´Ù. ÀÌ °£·«ÇÑ ¸ðµ¨À» »ç¿ëÇÏ¿© ÀÌÂ÷ scanning Ä¿ºê¿¡ ´ëÇÏ¿© °è»êÇÑ Åä¾ç ÇÔ¼ö·®°ú MualemÀÇ ¸ðµ¨À» ÀÌ¿ëÇØ¼ ±¸ÇÑ Åä¾ç ÇÔ¼ö·®À» ºñ±³ÇÏ¿´´Ù. ±× °á°ú µÎ ¸ðµ¨ »çÀÌÀÇ Àý´ë¿ÀÂ÷´Â ºñ±³Àû ÀÛ¾ÒÀ¸¸ç, °£·«ÇÑ ¸ðµ¨ÀÌ Mualem ¸ðµ¨º¸´Ù °íÂ÷ °ÇÁ¶½Ã¿¡´Â Ç×»ó ³·°Ô, °íÂ÷ ½ÀÀ±½Ã¿¡´Â Ç×»ó ³ô°Ô ÇÔ¼ö·®À» ÃßÁ¤ÇÏ¿´´Ù. µû¶ó¼ °ÇÁ¶¿Í ½ÀÀ±À» ¹Ýº¹ÇÏ´Â °æ¿ì ¿ÀÂ÷´Â ¼·Î »ó¼âµÈ´Ù. º» ¿¬±¸¿¡¼ °³¹ßµÈ °£·«ÇÑ ¸ðµ¨ÀÌ °íÂ÷ scanning Ä¿ºê¿¡¼ÀÇ Åä¾ç ÇÔ¼ö·®À» Àß ÃßÁ¤ÇÏ¿´À¸¸ç °è»ê°úÁ¤À» ¸¹ÀÌ °¨¼Ò½ÃÄ×´Ù. |
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| A simplified model for higher order scanning curves in the soil water characteristic function is suggested. The conceptual hysteresis models developed by $Mualem_{8,9}$ are simplied for higher order scanning curves. Higher order drying curves are regarded as primary drying curves and the last wetting reversal point is assumed to be on the main wetting curve by moving that point vertically downward. For the higher order wetting curves, it is assumed that these curves can be regarded as primary curves and the last wetting reversal point sits on the imaginary main drying curve which passes through the last wetting reversal point. The water content computed from the simplified model are compared with those obtained from Mualem's original model for second order scanning curves. It is found that absolute differences between the two methods aree relatively small and the simplified model always underestimates for higher order drying curves while it overestimates for higher order wetting curves. Hence, those two tend to compensate each other for repeated drying-wetting processes. The simplified model approximates higher order scanning curves well and reduces computation considerably. |
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.21, no.2, 1988³â, pp.193-201
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO198811920092350)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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